1. Chemistry

    Ranking equilibrium constants from largest to smallest according to an image?Ethene (C2H4) can be halogenated by the following reaction: C2H4 (g) + X2 (g) ->

    asked by L.Bianchessi on February 8, 2012
  2. chemmm helppppppppp

    Consider the following reaction: 2N2O(g)--->2N2(g) + O2(g) a. express the rate of the reaction with respect to each of the reactants and products. b.In the first 10.0 s of the reaction, .018 mol of O2 is produced in a reaction vessel with a volume of

    asked by Natash on February 1, 2009
  3. chemistry

    The reaction described by this equation O3(g) + NO(g) -- O2(g) + NO2(g) has the following rate law at 310 K. rate of reaction = 3.0x10^6 M^-1 s^-1)[O3][NO] Given that [O3]=2.0× 10–4 M and [NO]=2.0× 10–5 M at t=0, calculate the rate of the reaction at

    asked by Katie on March 23, 2012
  4. calculus 1-chemistry

    The relationship between the rate of a certain chemical reaction and temperature under certain circumstances is given byR(T)=0.1(−0.05T^3+4T^2+120)grams/sec, where Ris the rate of reaction and Tis the temperature (in °C). a)Find thetemperature T at

    asked by john on December 21, 2017
  5. Chemistry

    The average rate of disappearance of ozone in the reaction 2O3(g) ---> 3O2 (g) is found to be 8.12 x 10^-3 molecules over 15 seconds. What is the rate of appearance of O2 during this interval

    asked by Rose on April 24, 2016
  6. CHEMISTRY HELP!

    Consider the following reactions and their equilibrium constants. (NO(g) + 0.5Br2(g) NOBr(g) Kp = 5.3 2NO(g) N2(g) + O2(g) Kp = 2.1 x 1030 Use these equations and their equilibrium constants to determine the equilibrium constant for the following reaction:

    asked by jon on April 27, 2011
  7. Chemistry

    In a given 1st order reaction A ---> products, the initial concentration of A is 0.40 M. What will be the concentration of A after 15 seconds if the half-life of the reaction is 3 seconds? I found the concentration to be 1.25 x 10-2 M But then how do I

    asked by Marcus on February 18, 2013
  8. Chemistry

    A reaction in which X and Y form products was found to be second order in X and first order in Y. By what factor will the rate of the reaction change if [X] is doubled and [Y] is tripled? a. 10 b. 12 c. 20 d. 2

    asked by Student on February 19, 2015
  9. chemistry

    In a reaction involving the iodination of acetone, the following volumes were used to make up the reaction mixture: 10 mL 5.0 M acetone + 10 mL 1.5 M HCl + 10 mL 0.005 M I2 + 20 mL H2O A student found that it took 400 seconds for the color of the I2 to

    asked by leticia on March 5, 2015
  10. Chemistry

    The reaction of nitrogen dioxide with fluorine generates nitryl fluoride: 2NO2(g) + F2(g) --> 2NO2F(g) To determine the rate law for this reaction, a chemist performed several initial-rate experiments using different initial concentration, with the details

    asked by Lily on February 9, 2017
  11. Chemistry

    The reaction 2NO (g) + 2H2 -> N2 (g) + 2H2O (g) was found to follow the rate law, rate = k[NO]^2[H2]. By what factor will the rate of reaction increase when the pressure of NO gas is increased from 2.0 atm to 3.0 atm? Assume all other conditions are held

    asked by Mikey on July 13, 2016
  12. Chemistry

    What is the ratio of rate constants at 305k and 300k if the activation energy of a reaction is 58.3kJ/mol

    asked by Fouzia on March 29, 2017
  13. Calculus

    A chemical reaction proceeds in such a way that after the first second, the amount of a certain chemical involved in the reaction changes at a rate that’s inversely proportional to the product of the mass of the chemical present (in grams) and the time

    asked by Sarah on October 10, 2019
  14. chemistry

    For the reaction 2A(g) + B(aq) + 3C(l) D(s) + 3E(g), the concentrations at equilibrium are found to be: A: 2.3x10^3 Pa B: 1.8x10^-2 M C: 15.8M D: 12.5M E: 5.6x10^4 Torr Find the numerical value of the equilibrium constant that would appear in a

    asked by Ashley on March 10, 2013
  15. Chemistry

    A student tested the effect of temperature on the decomposition of N2O5. He found that the rate of the reaction at a lower temperature was 4.2 x 10–3 s–1 and the rate at a higher temperature was 1.6 x 101 s–1. What is wrong with the student's data?

    asked by Cortney on March 25, 2015
  16. Chemistry

    1) The rate expression for the reaction 2 SO2 + O --> 2 SO3 is given by rate = k [SO2]2[O2]. The overall order of this reaction is: first order 2)The rate reaction between A and B is expressed as rate = k [A][B]. To produce the greatest increase in the

    asked by Anonymous on December 23, 2007
  17. Chemistry Lab

    What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

    asked by Sunshine on July 20, 2009
  18. chemistry, chemical kinetics

    I keep getting these questions wrong, could someone please help. Thanks so much. Question 1 For the following overall reaction, the rate constant is 3.4x10^-2. A(g)+ 2B -> 2C + D What may be the rate reaction? Question 2 The rate law for this reaction is

    asked by student on July 2, 2010
  19. Chemistry

    In a reversible reaction, chemical equilibrium is attained when ? 1. Rate of the forward reaction is greater than the rate of the reverse reaction. 2. Rate of the reverse reaction is greater than the rate of the forward reaction, 3. Concentration of the

    asked by Jazmin F. on March 9, 2011
  20. Chemistry

    If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant there will be no effect on the: (1) rate of the forward reaction (2) rate of the reverse reaction (3) activation energy of the reaction (4) heat of reaction

    asked by Jazmin F. on March 9, 2011
  21. Engineering Chemistry

    One reaction that destroys O3 molecules in the stratosphere is NO + O3 → NO2 + O2 When this reaction was studied in the laboratory, it was found to be first order with respect to both NO and O3, with a rate constant of 1.9 x 104 L mol-1 s-1. If [NO] =1.2

    asked by Michelle Zuke on October 9, 2015
  22. Chemistry

    The reaction 2B--->C + 2D is found to be zero order when run at 990 degrees C. If it takes 3.3X110^2 s for an initial concentration of B to go from 0.50 M to .20 M what is the rate constant for the reaction? what is the half life of the reaction under

    asked by Lauren on February 29, 2008
  23. chem.

    the rate limiting step is unimolecular with A as the sole reactant. A+B-----C+D If A and B are both 0.200M, then the rate reaction is 0.0050M/s A. What is the rate of the reaction if A is doubled? B. starting with original concentrations what is the rate

    asked by Anonymous on March 14, 2014
  24. Chemistry 2

    An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and A = 2.000 x 10^-3. What must be the reaction temperature if a rate of 1.000 x 10^-9 M/s is required and [C] must be kept at

    asked by Jessica on March 12, 2012
  25. Chemistry

    When 0.13 g of H2 and 0.18 g of I2 are confined to a 150. mL reaction vessel and heated to 700. K, they react by a second-order process (first order in each reactant), with k = 0.063 L·mol-1s-1 in the rate law (for the rate of formation of HI). (a) What

    asked by Sara on June 28, 2013
  26. Chemistry

    Before a chemical reaction reaches equilibrium, A. the reaction rates of the reactants and products increase. B. the reaction rate of the reactants increases and the reaction rate of the products decreases. C. the reaction rates of the reactants and

    asked by soco on August 9, 2015
  27. chemistry

    The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH --> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.135 M, the rate of the reaction is 0.0070 M/s. (a) What is the rate of the reaction if the concentration of

    asked by katie on March 24, 2012
  28. Ap chemistry

    Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction

    asked by Ivey on March 5, 2015
  29. Chemistry

    The oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the net reaction H3AsO4 + 3I – + 2 H3O +→ H3AsO3 + I3– + H2O. The experimental rate law for this reaction is Rate = k [H3AsO4] [I–] [H3O+]. According to the

    asked by Jenna on April 22, 2017
  30. chemistry

    The activation energy of a reaction is typically determined by calculating the rate constant for the reaction at two temperatures and then manipulating the Arrhenius equation. If you determine the reaction rate constants for a particular reaction to be

    asked by danny on February 14, 2015
  31. CHEM

    How are the forward and reverse rate constants for a one-step reaction related to the equilibrium constant for the reaction? A)Kc = kf x kr B) Kc = kf - kr C) Kc = kf + kr D) Kc = kf/kr

    asked by Adam on May 29, 2010
  32. chemistry

    The rate constant for this reaction was found to be 0.00550 s-1. What is the instantaneous rate of reaction when the concentration of dinitrogen pentoxide is 0.100 M? Rate = k[N2O5].

    asked by Anonymous on April 26, 2012
  33. chemistry

    The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out

    asked by elvis on February 18, 2012
  34. chemistry

    The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out

    asked by elvis on February 18, 2012
  35. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or

    asked by Brun on October 15, 2012
  36. chemistry ASAP please!!

    One reaction that destroys O3 molecules in the stratosphere is NO + O3  NO2 + O2 When this reaction was studied in the laboratory, it was found to be first order with respect to both NO and O3 with a rate constant of 1.9 x 104 mol L-1S-1. If [NO] = 1.2

    asked by Massiel on March 20, 2011
  37. Chemistry

    Because of the changing color of the solution as the following reaction proceeds, the rate law can be determined by measuring the rate of disappearance of the permanganate ion (MnO4-). 2MnO4-(aq)+ 5H2C2O4(aq) + 6H+(aq) -> 2Mn2+(aq) + 10CO2(g) + 8H2O(l) The

    asked by Freddy on February 5, 2015
  38. chemistry

    Consider the 2-step reaction mechanism fast 2NO + H2 $ N2O+H2O slow N2O+H2 ! N2+H2O net 2NO + 2H2 ! N2 + 2H2O Which of the following rate laws is cor- rect for the given mechanism? Note that the constant k may represent a combination of elementary reaction

    asked by Anonymous on January 10, 2011
  39. college math/chemistry

    chemical reaction: E + S E~S E-S indicates a bidirectional reaction with different forward and backward rate constants. we can call these k1, k2, k3 and k4 in the above equation. Here, the enzyme binds to the substrate; the initial complex E~S then

    asked by Heather on December 9, 2010
  40. chemistry

    1) The activation energy of a certain reaction is 35.3 kJ/mol. At 20 degrees C, the rate constant is 0.0130 s^-1. At what temperature would this reaction go twice as fast? Answer in units of degrees Celsius. i think the answer is around 34, but i keep in

    asked by Evets on January 29, 2008
  41. Chemistry

    For the reversible, one-step reaction A + B ARROW C + D, the forward rate constant is 35.9 1/(M·h) and the rate constant for the reverse reaction is 25.4 1/(M·h). The activation energy was found to be 33.0 kJ/mol for the forward reaction and 45.6 kJ/mol

    asked by parker on June 13, 2012
  42. Chemistry

    HELP! we just started kinetics and i have no clue how to solve this problem. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737

    asked by Jonathan on February 20, 2008
  43. Chemistry Lab

    What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

    asked by Sunshine on July 20, 2009
  44. Chemistry

    Hi can someone please help with this question, or atlest direct me in the right direction. Please and thank you. The initial rate of reaction H2O2(aq) --> H2O (l) + 1/2 O2(g) is found to be1.7*10^-3 M/s . Assume that this rate holds for 2 minutes. Start

    asked by Melanie on November 20, 2008
  45. Chemistry

    A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction. The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the

    asked by Kevin on May 19, 2009
  46. chemistry

    In a reaction involving the iodination of acetone, the following volumes were used to make up the reaction mixture: 10 mL 4.0 M acetone + 10mL 1.0 M HCL + 10 mL 0.0050 M I2 + 20 mL H2O A student found that it took 250 seconds for the color of the I2 to

    asked by Paul on July 26, 2010
  47. chemistry

    The rate law of the overall reaction. A + B -> C is rate = k[ A ]^2 Which of the following not increase the rate of a chemical reaction? a) increasing the temperature of the reaction b)increasing the concentration of reaction A c)adding a catalyst for the

    asked by ben on November 18, 2010
  48. Chemistry

    I am trying to figure out how to calculate the reaction rate. In my question the reaction rate is: 1/2x molarity of sodium thiosulfate/reaction time Then I have to compare the rates of runs 1-3 and determine the orders of the reaction. Do I only find the

    asked by Zach on October 1, 2012
  49. Chemistry

    Do the reaction rate depends on the concentration of catalyst? I googled this and found that the decomposition of H2O2 stops of we add excess MnO2. Are there any other examples like this? Or does this happens with every catalyst when they are in excess or

    asked by Shenaya on July 31, 2017
  50. Chemistry

    1. The following data was collected for the reaction between hydrogen and nitrogen monoxide. The time recorded corresponds to a N2 concentration change of 5.3 x 10-4 M. 2H2(g) + 2NO(g)  2H2O(g) + N2(g) Trial [H2], M [NO], M Time, s 1 0.01 0.02 74 2 0.02

    asked by Jason on June 4, 2013
  51. Chemistry

    H6P6: Urbium Oxide First Part of the Question: Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with

    asked by Odesa on November 29, 2012
  52. science

    What change do you expect if the value of the reaction quotient is greater than the value of the equilibrium constant? A. The rate of the forward reaction is greater than the rate of the reverse reaction. More reactant forms. B. The rate of the forward

    asked by logan on September 13, 2016
  53. chemistry

    Which of the following statements is not true? 1.Chemical equilibria are examples of reversible processes. 2.When multiple reaction steps are in equilibrium, then the equilibrium constant for the net reaction is the product of the individual reactions.

    asked by danny on February 25, 2015
  54. Chemistry

    Consider the reaction 2A (g) + B (g) --> C (g) At 300K temperature, pressure of A and B are 2*10^5 Pa. The temperature is kept constant and let the reaction occur. After 5 mins the total pressure of the system os 3.5*10^5 Pa. Question : When the pressure

    asked by Ashley on January 13, 2019
  55. Chemistry

    For the reaction 2 NO (g) + Cl2 (g) → 2 NOCl (g) If the concentration of NO is tripled, the rate of the reaction increases by a factor of nine. If the concentration of Cl2 is cut in half, the rate of the reaction is decreased to half the original rate.

    asked by Nicole on April 17, 2016
  56. Chemistry

    1. Nitric oxide reacts with bromine gas at elevated temperatures according to the equation, 2 NO(g) + Br2(g) = 2 NOBr(g) The experimental rate law is rate = k[NO][Br2]. In a certain reaction mixture the rate of formation of NOBr(g) was found to be 4.50 x

    asked by Hannah on February 19, 2012
  57. Chemistry

    The chemical reaction N2(g)+ 3H2(g) 2NH3(g) is at equilibrium. An expirimenter increases the volume of the reaction chamber by 10%. Explain what happens to bith the forward and reverse reaction rates from the moment the volume is changed until equilibrium

    asked by Chrissy on April 12, 2007
  58. Organic Chem

    The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH ---> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.150 M, the rate of the reaction is 0.0090 M/s. a) what is the rate of the reaction if the concentration of

    asked by Bryan on November 9, 2011
  59. Chemistry

    Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

    asked by Michael on January 27, 2011
  60. Chemistry

    Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

    asked by Michael on January 26, 2011
  61. Chemistry

    The rate of a reaction A ---> B is expressed by the rate expression rate=k(A)2. If the molar concentration of A is tripled, the rate of the reaction should increase by a factor of some many?

    asked by Marcus on February 9, 2013
  62. chemistry

    What change do you expect if the value of the reaction quotient is greater than the value of the equilibrium constant? A. The rate of the forward reaction is greater than the rate of the reverse reaction. More reactant forms. B. The rate of the forward

    asked by jessie on September 12, 2016
  63. Chemistry

    When the rate of the reaction 2NO+O2=2NO2 was studied, the rate was found to double when the O2 concentration alone was doubled but to quadruple when the NO concentration alone was doubled. Which of the following mechanisms accounts for these observations?

    asked by Anonymous on March 14, 2014
  64. chemistry

    The rate constants for a reaction are found to be k(1431 C) = 19.4 x 10 -6 s-1 k(1897 C) = 25.2 x 10 -5 s-1 At what temperature (in degrees C) will the rate constant be 74.7*10-2 s-1?

    asked by kanthimathi on December 16, 2018
  65. chemistry

    The rate constants for a reaction are found to be k(1431 C) = 19.4 x 10 -6 s-1 k(1897 C) = 25.2 x 10 -5 s-1 At what temperature (in degrees C) will the rate constant be 74.7*10-2 s-1?

    asked by kanthimathi on December 16, 2018
  66. Chemistry

    The rate constants for a reaction are found to be k(-35 C) = 1.0 x 10-3 s-1 k(-25 C) = 2.0 x 10-3 s-1 At what temperature (in degrees C) will the rate constant be 3.79 x 10-3 s-1?

    asked by ss01 on October 12, 2013
  67. science

    The rate constants for a first order decay reaction are found to be:

    asked by hermy on January 12, 2013
  68. Chemistry

    The rate constants for a first order decay reaction are found to be: K287.3C = 1 X 10-4s-1 K327.4C = 19.2 X 10-4s-1 (a) Determine the value, in s-1 of K250C (b) How long will it take, at 350C, for the reactant to decay to 1% of its original concentration?

    asked by Chemgam on January 11, 2013
  69. Chemistry

    The rate constants for a first order decay reaction are found to be: k287.3∘C=1 x 10−4 s−1 k327.4∘C=19.2 x 10−4 s−1 (a) Determine the value, in s-1 of k250∘C (b) How long will it take, at 350 ∘C, for the reactant to decay to 1% of its

    asked by selly on January 11, 2013
  70. chemistry

    The rate constants for a first order decay reaction are found to be: k287.3∘C=1 x 10−4 s−1 k327.4∘C=19.2 x 10−4 s−1 a) Determine the value, in s-1 of k250∘C (b) How long will it take, at 350 ∘C, for the reactant to decay to 1% of its

    asked by Anonymous on January 11, 2013
  71. Chemistry

    For the reaction: 5A + 3B -> 6C + D, the following data is found: Time________A 0.00s .775 M 5.00s .200 M Find the rate of disappearance of A, the overall rate of reaction, and the reates of disapperance and appearance of B, C, and D. The answers I got

    asked by Aletha on February 21, 2007
  72. Chemistry

    An excited ozone molecule, O3*, in the atmosphere can undergo one of the following reactions, O3* → O3 (1) fluorescence O3* → O + O2 (2) decomposition O3* + M → O3 + M (3)deactivation, where M is an inert molecule, the rate constant for the

    asked by Anonymous on December 7, 2015
  73. Chemistry

    An excited ozone molecule, O3*, in the atmosphere can undergo one of the following reactions, O3* → O3 (1) fluorescence O3* → O + O2 (2) decomposition O3* + M → O3 + M (3)deactivation, where M is an inert molecule, the rate constant for the

    asked by Anonymous on December 5, 2015
  74. Chemistry

    What is the activation energy for a simple A->B fist order type of reaction with the following rate constants at different temperatures? Temp rate constant (k) 310K 1.77 x 10-1s-1 480K 3.22 x 10^2s-1

    asked by Kristi on December 7, 2011
  75. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or

    asked by Brun on October 15, 2012
  76. chemistry

    According to the mechanism below, what is the correct expression for the rate consumption of A? In the mechanism, M is a molecule that collides with A and A* is a highly-energized for of A. Step 1: A+M A*+M : rate constants k1 and k-1 Step 2: A* C : rate

    asked by Jin on June 18, 2014
  77. chemistry

    Consider the 2-step reaction mechanism fast 2NO + H2 $ N2O+H2O slow N2O+H2 ! N2+H2O net 2NO + 2H2 ! N2 + 2H2O Which of the following rate laws is cor- rect for the given mechanism? Note that the constant k may represent a combination of elementary reaction

    asked by Anonymous on January 10, 2011
  78. chemistry

    The given reaction, cyclopropane propene (isomerization), follows first-order kinetics. The half-live was found to be 4.57 min at 796 K and rate constant was found to be 0.0328 s-1 at 850 K. Calculate the activation energy (in kJ/mol) for this reaction.

    asked by bobjahng2 on November 23, 2010
  79. ap chemisrty

    When heated, cyclopropane is converted to propene. Rate constants for this reaction at 470°C and 510°C are k = 1.10 10-4 s-1 and k = 1.02 10-3 s-1, respectively. Determine the activation energy, Ea, from these data.

    asked by sandra on January 27, 2011
  80. Chem

    Consider the following reaction was found to be the 0th order to A and 2nd order to B. 2A(cr) + 3B(aq) -->A2B3(cr) Write a rate law equation for the reaction rate of A with B.

    asked by Anonymous on January 29, 2008
  81. AP CHEM

    For the reaction A + 2B + C ----> 2 D + E the following initial concentration and initial reaction rates are found: [A]null (M) [B]null (M) [C]null (M) 0.150 0.150 0.150 0.275 0.150 0.150 0.275 0.564 0.150 0.150 0.314 0.253 0.193 0.314 0.217 initial rate

    asked by Gabe on February 25, 2008
  82. CHEMISTRY PLEASE HELP

    For the reaction A + 2B + C ----> 2 D + E the following initial concentration and initial reaction rates are found: [A]null (M) [B]null (M) [C]null (M) 0.150 0.150 0.150 0.275 0.150 0.150 0.275 0.564 0.150 0.150 0.314 0.253 0.193 0.314 0.217 initial rate

    asked by Gabe on February 25, 2008
  83. chemistry

    The reaction, cyclopropane propene (isomerization), was observed to have rate constants k = 0.000213 s-1 at 477 °C and k = 0.0328 s-1 at 577 °C. What is the value of Ea expressed in kJ mol-1? Round your answer to 3 significant figures.

    asked by bobjahng2 on November 23, 2010
  84. CHEM

    4. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3 (g) P4 (g) + 6H2 (g) (a) Express the rate of reaction with respect to each of the reactants and prducts (b) If the instanteneous rate of the

    asked by N.Z on June 22, 2015
  85. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-ls-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is

    asked by Hannah on February 20, 2012
  86. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-ls-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is

    asked by Hannah on February 20, 2012
  87. Chemistry

    Using the Isolation method, we are to determine the rate law of the equation, RCOOR' + OH− → RCOO− + R'OH (where R and R' represent organic groups). Initial concentration of experiment 1:[OH−]0 = 0.900 M [RCOOR']0 = 0.0010 M Initial concentration

    asked by Sleep deprived on January 15, 2020
  88. chem

    The activation energy of a certain reaction is 65.7 kJ/mol. How many times faster will the reaction occur at 51°C than at 8°C? State the assumptions you need to make in order to perform this calculation. (Select all that apply.) The collision model and

    asked by Hannah on February 10, 2013
  89. chemistry-help!

    The initial rate of reaction for H2O2(aq) H2O (l) 1/2 O2 (g) is found to be 1.7x10(-3)M/s. Assume that this rate holds for 2 minutes. Start with 160ml of 1.60 M H2O2. How many milliliters of O2 measured at 24C and 760mmHg , are released from solution in

    asked by Matt on November 21, 2011
  90. Chemistry

    How do I answer this question? The average rate of disappearance of ozone in the reaction 2O3 --> 3O2 is found to be 8.12 x 10^-3 molecules over 15 seconds. What is the rate of appearance of O2 during this interval?

    asked by Rose on April 22, 2016
  91. chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-l s-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is

    asked by steve on February 17, 2012
  92. Chemistry

    Write rate law expressions? 2NOCl(g) --> 2NO(g) + Cl2(g) S2O3^2-(aq) + H^+(aq) --> HSO3^-(aq) + S(s) (Sulfur initially forms a colloid solution so it can be treated as aqueous.) (1) Write the rate law expression for the above reactions, assuming these are

    asked by Donna on May 21, 2008
  93. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate,mol L-l s-1 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is

    asked by Kay on February 21, 2012
  94. AP CHEM-URGENT PLEASE

    could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)-----> 3 C (g) a.

    asked by Jonathan on February 20, 2008
  95. CHEMISTRY

    could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)-----> 3 C (g) a.

    asked by Jonathan on February 21, 2008
  96. Chemistry

    could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)-----> 3 C (g) a.

    asked by Kevin on February 25, 2008
  97. Chemistry

    Which of the following rate constants corresponds to the reaction that converts reactants to products in the least amount of time? a. 4.48 x 10^-5 min^-1 b. 4.48 x 10^-5 s^-1 c. 0.0547 s^-1 d. 0.0547 min^-1

    asked by Ramon on March 23, 2018
  98. chemistry

    Based on reaction kinetics, which of the following pairs of reactions and reaction rate equations represent elementary reactions? You may choose more than one reaction. Ti + 2Cl2 = TiCl4 Rate = k[Ti][Cl2] 2SO2 + O2 = 2SO3 Rate = k[O2][SO2]2 Na2S + CuSO4 =

    asked by danny on February 14, 2015
  99. chemistry

    A reaction between A and B is found to be first order in [A] and second order in [B]. If [A] is halved and [B] is doubled, the rate of the reaction will (A) remain the same. (B) be increased by a factor of 2. (C) be increased by a factor of 4. (D) be

    asked by JAY_ndabeh on September 21, 2019
  100. college chemistry

    The rate of the following reaction: 2 NO2 2 NO + O2, is characterized by the rate constant k = 0.775 L·mol-1s-1. What is the half-life for this reaction at the same conditions when the initial concentrations are 0.0115 M? (Round your answer to 3

    asked by sparkle on November 10, 2010