1. 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
  2. chemistry

    The formation of nitroanalyine (an important intermediate in dyes, called ‘fast orange’) is formed from the reaction of ortho-nitrochlorobenzene (ONCB) and aqueous ammonia. (See Table 3-1 and Example 9-2.) The liquid-phase reaction is first-order in

    asked by john on February 24, 2011
  3. Chemistry

    For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.340 mol of F2 is added to this equilibrium mixture, calculate the

    asked by Elizabeth on February 21, 2012
  4. chemistry

    For the following reaction at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.261 mol of F2 is added to this equilibrium mixture, calculate

    asked by Meghan on November 14, 2009
  5. chemistry

    For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 4.87-L rigid container are [H2] = 0.0496 M [F2] = 0.0116 M [HF] = 0.429 M. H2(g) + F2(g) 2 HF(g) If 0.185 mol of F2 is added to this equilibrium mixture,

    asked by Anonymous on November 8, 2013
  6. Chemistry

    For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g +  it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this

    asked by Jerry on April 4, 2013
  7. chemistry

    What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) -->

    asked by l on July 20, 2011
  8. equilibrium constant (Kp)

    What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) -->

    asked by k on July 20, 2011
  9. chemistry help

    During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the

    asked by emma on September 10, 2016
  10. Chemistry(Please check)

    1) A catalyst alters the rate of a reaction by a. changing the products in the reaction. b. increasing the activation for the reaction. c. always providing a surface on which the molecules react. d. providing an alternate pathway for the reaction. e.

    asked by Hannah on February 25, 2012
  11. chemistry

    During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the

    asked by jessie on September 11, 2016
  12. chemistry

    The initial state of a reaction is A2 +B2 –> 2AB. In the initial state of the reaction there are 6 A2’s present and 6 B2’s present. Suppose the reaction is carried out at two temperatures.Which of these situations represents the result at the higher

    asked by George on July 18, 2010
  13. Chemistry

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration

    asked by Samm on May 7, 2013
  14. College Chemistry 104

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration

    asked by Samm on May 7, 2013
  15. Chemistry

    At room temperature, 80.0 ml of 0.125 M AgNO3(aq) and 20.0 ml of 0.500 M Fe(NO3)2(aq) are mixed together, generating the following equilibrium system Ag+ (aq) + Fe2+(aq) Ag(s) + Fe3+(aq). At equilibrium, the concentration of Fe3+ is 0.00505 M. (a) (4 pts)

    asked by Anonymous on September 27, 2013
  16. Chemistry

    I: The standard reaction free energy at equilibrium is zero. II: A reaction stops when the equilibrium is reached. III: An equilibrium reaction is not affected by increasing the concentrations of products. Which of these statements is/are true?

    asked by Susan on June 3, 2014
  17. CHEMISTRY 1C

    An equilibrium constant ... A. is small when the products are favored in the reaction. B. is calculated by dividing the concentration of the reactants by the concentration of the products. C. is the same, regardless of the initial concentrations of

    asked by WENDY on January 19, 2009
  18. chemistry

    An equilibrium constant ... A. is the same, regardless of the initial concentrations of reactants. B. is small when the products are favored in the reaction. C. is calculated by dividing the concentration of the reactants by the concentration of the

    asked by Wayland on April 10, 2008
  19. chemistry

    An equilibrium constant A. is small when the products are favored in the reaction. B. is the same, regardless of the initial concentrations of reactants. C. is calculated by dividing the concentration of the reactants by the concentration of the products.

    asked by Jason on April 9, 2008
  20. Chemistry

    An equilibrium constant ... A. is independent of temperature. B. is small when the products are favored in the reaction. C. is calculated by dividing the concentration of the reactants by the concentration of the products. D. is the same, regardless of the

    asked by Lisa on April 9, 2009
  21. Chemistry

    Voltaic cell. The initial concentrations of Ni2+ and Zn2+ are 1.50 M and 0.100 M. Initial cell potential=.56 V. What are the concentrations of Ni2+ and Zn2+ when the cell potential falls to 0.45 V?

    asked by Danielle on July 30, 2010
  22. Chemistry

    2 NO(g) + O2 (g) 2 NO2 (g) Given that Kp=7.96×1012 for the reaction above and the following starting conditions: Initial Concentrations p(NO)=0.775 atm p(NO2)=0.000 atm p(O2)=0.789 atm Determine the equilibrium concentration of NO2.

    asked by Haley on March 8, 2014
  23. chemistry

    The equilibrium constant Kc for the reaction C D + E is 7.90 * 10^-5. The initial composition of the reaction mixture is [C]=[D]=[E]=1.10*10^-3. What is the equilibrium concentrations of C, D, and E? C=? D=? E=? chemistry - DrBob222, Monday, November 5,

    asked by Brunette on November 5, 2012
  24. chemistry

    Starting with equal concentrations of all solutes, predict the direction in which the following reaction will proceed. H3PO4(aq) + HCO3-(aq) ¨ H2PO4-(aq) + H2CO3(aq) a. left b. right c. no net reaction

    asked by Anonymous on March 8, 2009
  25. chemistry

    A mixture of 0.100 mol NO, 0.200 mol H2 and 0.0800 mol N2 were placed in a 2.00L reaction vessel, heated, and allowed to come to equilibrium conditions. At equilibrium, the molar concentration of N2 was 0.0500 mol/L. Calculate Kc for this reaction. 2NO +

    asked by gab on July 18, 2014
  26. Chemistry

    My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

    asked by Louise on October 4, 2014
  27. Chemistry

    My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

    asked by Louise on October 4, 2014
  28. Chemistry

    My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

    asked by Louise on October 4, 2014
  29. chemistry

    '24.6 mL of 0.488 M NaCl is added to 24.6 mL of 0.312 M AgNO3. How many moles of AgCl would precipitate? What would be the concentrations of each of the ions in the reaction mixture after the reaction? Ion Concentration (M) Ag+ M NO3- M Na+ M Cl- M'

    asked by walter on June 14, 2015
  30. Chemistry

    . For the gas reaction at low pressure 2NOBr ¡ê 2NO + Br2 ¥ÄH = +61.1 kJ which of the following statements are true? a) Adding more Br2 shifts reaction to the right b) Removing some NOBr shifts reaction to the left c) Increasing temperature shifts

    asked by Ava on September 29, 2009
  31. chemistry

    . For the gas reaction at low pressure 2NOBr ↔ 2NO + Br2 ΔH = +61.1 kJ which of the following statements are true? a) Adding more Br2 shifts reaction to the right b) Removing some NOBr shifts reaction to the left c) Increasing temperature shifts

    asked by Ava on September 29, 2009
  32. Chemistry

    For the following reaction, the equilibrium constant Kc = 97.0 at 900K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S(g) + NH3(g) = NH4HS(s) Would you have to create an ICE chart for this

    asked by David on March 17, 2012
  33. College Chemistry

    What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M,

    asked by Maria on June 23, 2012
  34. Chemistry(Urgent, please check)

    I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 ICE tables because we used 5

    asked by Hannah on March 4, 2012
  35. Chemistry(Please check, thank you!)

    I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 ICE tables because we used 5

    asked by Hannah on March 4, 2012
  36. 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
  37. CHEM

    For the equilibrium reaction Co(g)+H2O(g)CO2(g)+H2(g) the Keq value at 690°C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a) Write the Keq expression for this reaction and use

    asked by AMI on January 27, 2012
  38. chem

    For the equilibrium reaction: CO(g)+H2O(g)CO2(g)+H2(g) the Keq value at 690°C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a)Write the Keq expression for this reaction and use

    asked by ami on January 27, 2012
  39. science

    The gas-phase reaction, A2 + B2 --> 2AB, proceeds by bimolecular collisions between A2 and B2 molecules. If the concentrations of both A2 and B2 are doubled, the reaction rate will change by a factor of.....? Will you please explain instead of just giving

    asked by pepe on May 6, 2016
  40. 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 15, 2014
  41. Chemistry

    For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)

    asked by Riley on March 18, 2012
  42. Chemistry

    For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)

    asked by Riley on March 18, 2012
  43. chem

    Butadiene can undergo the following reaction To form a dimer(two butadiene molecules hooked together). 2c4h8---->c8h12. The half life for the reaction at a given temperature is 5.92x10-2 sec. The reaction kinetics are second order. 1. If the initial

    asked by court on March 25, 2012
  44. Chemistry(Please check)

    I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 ICE tables because we used 5

    asked by Hannah on March 5, 2012
  45. Chemistry

    Okay, this is a question in several parts that really stumps me: Given the following reaction determine the rate of expression (CH3)3CBr + OH -----> (CH3)3COH + r [(CH3)3CBr] OH Initial reaction rate (mol L-1 sec-1) .10 .10 1.0 x 10 ^ -3 .20 .10 2.0 x 10 ^

    asked by Wendi on April 17, 2011
  46. Chemistry

    1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the

    asked by josh on October 16, 2012
  47. Chemistry

    An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq)  C4H9OH(l) + Br-(aq) This reaction was investigated experimentally

    asked by turner on April 3, 2012
  48. Chemistry

    The lab we are doing is: Determining the ENTHALPY of a Chemical Reaction. There are three reactions. Reaction 1: NaOH + HCl, Reaction 2: NaOH + NH4Cl, and Reaction 3: HCl + NH3. I found the max temp, initial temp, and temp change of each reaction. Can you

    asked by Rina on October 30, 2017
  49. chemistry

    Under standard conditions for all concentrations, the following reaction is spontaneous at 25 ¢XC with EO = 0.16 V. + - 02 (g) + 4 H (aq) + 4 Br (aq) -+ 2 H20 (I) + 2 Br2 (1) If [H+] is a?justed by adding a buffer of 0.10 M NaOCN and 0.10 M HOCN (Ka = 3.5

    asked by leo on December 15, 2014
  50. College Chemistry

    Determine the concentrations of MgCl2, Mg2+, and Cl- in a solution prepared by dissolving 2.39 x 10^-4g MgCl2 in 2.50L of water. Express all three concentrations in molarity. Also display the concentrations of ionic species in part per million (ppm).

    asked by Bailey on September 21, 2016
  51. Chemistry

    For the following reaction 2NO2 -> 2NO +O2 is second order reaction. If the initial concentration of NO2 is 0.098M and the initial rate of disappearance is 2.72e-3 M/sec , what is the value of the rate constant?

    asked by Cole on February 10, 2015
  52. Chemistry

    SO this is my first time doing this... lol i need help on an AP chemistry question for equilibrium. A 0.500 L tank contains 3.00 g of NO(g) at 750. K. The equilibrium constant for the reaction below at this temperature is 3.4 x 10 -3 2NO(g) ⇌ N2(g) +

    asked by Sam on April 10, 2012
  53. Chemsitry

    For the following equilibrium process: CO2 + H2 = CO + H2O The equilibrium concentrations of reacting species are: [CO]= .050 M; [H2]= .045 M; [CO2]= .086 M; [H2O]= .040 M. (a) Calculate Kc for the reaction (b) If we add CO2 to increase its concentration

    asked by Ronnie on August 17, 2008
  54. Chemistry(Please help)

    For the reaction, 2 SO2(g) + O2(g) == 2 SO3(g), at 450.0 K (Kelvin) the equilibrium constant, Kc, has a value of 4.62. A system was charged to give these initial concentrations, (SO3) = 0.254 M and (O2) = 0.00855 M, and (SO2) = 0.500 M. In which direction

    asked by Hannah on March 15, 2012
  55. Chemistry

    Consider the reaction HCHO(g) *) H2(g) + CO(g). 1.0 mol of HCHO, 1.0 mol of H2 and 1.0 mol of CO exist in equilibrium in a 2.0 L reaction vessel at 600C. a) Determine the value of the equilibrium constant Kc for this system. 2.0 moles of HCHO and 1.0 mol

    asked by Susan on June 3, 2014
  56. Chemistry

    Which of the following has no effect on the rate ofa reaction? a)degree of branching or size of reactant molecules b)value of Heat of reaction c)presence of a catalyst d)temperature of the reactants e) concentrations of the reactants

    asked by Mike on September 17, 2016
  57. Science work

    A reaction is thought to be second order with respect to the concentration of carbon monoxide. What evidence would support this? Answer options... A. Changing the initial concentration would have no effect on the rate. B. Any change in the initial

    asked by Jackson on August 18, 2016
  58. Chemistry

    A chemist does a reaction rate analysis on the following reaction: 2CO (g) + O2 (g) → 2CO2 (g) She collects the following data: Trial Initial Concentration of CO (M) Initial Concentration of O2 (M) Instantaneous Reaction Rate (M/s) 1 0.150 0.150 0.113 2

    asked by Violet on July 1, 2011
  59. Chem Class

    The data in the table below were obtained for the reaction: A + B → P 3 Experiments 1 (A) (M): 0.273 (B) (M): 0.763 Initial Rate (M/s): 2.83 2 (A) (M): 0.273 (B) (M): 1.526 Initial Rate (M/s): 2.83 3 (A) (M): 0.819 (B) (M): 0.763 Initial Rate (M/s):

    asked by jack ross on October 24, 2010
  60. chem class

    The data in the table below were obtained for the reaction: A + B → P 3 Experiments 1 (A) (M): 0.273 (B) (M): 0.763 Initial Rate (M/s): 2.83 2 (A) (M): 0.273 (B) (M): 1.526 Initial Rate (M/s): 2.83 3 (A) (M): 0.819 (B) (M): 0.763 Initial Rate (M/s):

    asked by jack ross on October 24, 2010
  61. 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
  62. augusta state

    What is the final concentration of d at equilibrium if the initial concentrations are a = 1.00 and b = 2.00 ?

    asked by e on March 2, 2013
  63. Chemistry

    A concentration cell based on the following half reaction at 317 K (Cu^2+) + (2e-) --> (Cu) SRP = 0.34 V Has initial concentrations of 1.33 M Cu2+, 0.393 M Cu2+, and a potential of 0.01665 V at these conditions. After 4.1 hours the new potential of the

    asked by Arron on February 16, 2012
  64. Chem2

    A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. If the concentration of C is increased by a factor of 4.95 (and all other concentrations are held constant), how much will the rate of

    asked by Ryan on May 3, 2011
  65. Chemistry

    At the start of the reaction there are 0.714 mole of H2, 0.984 mole of I2, and 0.886 mole of HI in a 2.70 L reaction chamber. Calculate the concentrations of the gases at equilibrium.

    asked by Amy on February 23, 2013
  66. Chemistry

    50 mL of copper(II) sulfate reacts with 50 mL of sodium hydroxide. Their concentrations are 0.3 M and 0.6 M respectively. The temperature increased to 23.6 C from 23.4 C. Determine the enthalpy change for the reaction in kJ/mol of sodium hydroxide. Q=mcΔT

    asked by a Canadian on March 4, 2013
  67. Science

    The following reaction: 2SO3 (g) ! 2SO2 (g) + O2 (g) has an equilibrium constant equal to 0.23 M. If the following concentrations are present: [SO2] =0.480 M, [O2] = 0.561 M, [SO3] = 0.220 M, is the reaction at equilibrium? If not, which way must it shift

    asked by Abby on July 1, 2011
  68. Chemistry

    2A(aq)-> B(aq) +C(aq) Initial concentration of A and B is 1.00 M, with no C. Kc = 0.200 find equilibrium concentrations

    asked by Jordan on March 15, 2013
  69. Chemistry

    Consider the equilibrium 2NOCl (g) 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in

    asked by Anna on April 13, 2013
  70. CHEMISTRY

    The equilibrium constant for the reaction, SO2(g)+ NO2(g) NO(g)+ SO3(g) has been experimentally determined as a function of temperature. The results are presented in the table below. T (°F) KC 285 662 752 156 842 93.4 932 59.6 1022 40.2 If 0.0791 ft3 SO2,

    asked by Josh on March 25, 2011
  71. Chemistry

    The Kc for the following reaction at 940oC is 1.38. Given the concentrations [CO2] = 0.500 M, [H2] = 0.425 M, [CO] = 0.610 M and [H2O] = 0.695 M, one can conclude that: H2(g) + CO2(g) ↔ CO(g) + H2O(g) Question 8 options: A) the system is not at

    asked by Katie on May 11, 2012
  72. chemistry

    I have to calculate the ΔV= final volume-initial volume For the first trial the final volume was .005mL the initial volume was .03mL, which equaled to -.025mL. The volume was negative because it was exothermic reaction. For the second trial the final

    asked by xx on November 22, 2014
  73. chemistry

    I have to calculate the ΔV= final volume-initial volume For the first trial the final volume was .005mL the initial volume was .03mL, which equaled to -.025mL. The volume was negative because it was exothermic reaction. For the second trial the final

    asked by xx on November 23, 2014
  74. General Chemisty

    2. Calculate the value of the equilibrium constant (Kc) for the reaction shown, if NO2(g) was found to be 95.54 % decomposed at 45.00 °C when its initial concentration was 5.725 mol/L. The initial concentration of the reaction products is 0 mol/L. 2NO2(g)

    asked by aarf on October 2, 2013
  75. Chemistry

    Calculate the value of the equilibrium constant (Kc) for the reaction shown, if NO2(g) was found to be 95.54 % decomposed at 45.00 °C when its initial concentration was 5.725 mol/L. The initial concentration of the reaction products is 0 mol/L. 2NO2(g) =

    asked by plzhelp on October 2, 2013
  76. chemistry

    In a reaction involving the bromination of acetone, the following initial concentraions were present in the reaction mixture. acetone (0.8mol/L), H+ (0.2 mol/L), Br2 (0.004 mol/L) At 25 degrees C, it took 240s before the colour of Br2 disappeared. If the

    asked by Mal on February 27, 2011
  77. Chemistry

    If the initial concentration of NO(g) is 6.745 mol/L, calculate the % of NO(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kc at 2400 K is 400.00. The initial concentration of the reaction products is 0

    asked by Amphee on April 8, 2010
  78. 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 March 1, 2008
  79. Chemistry

    Consider this equilibrium process at 686°C. CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M. (a) Calculate Kc for the reaction at 686°C. (b) If

    asked by Jackie on February 24, 2013
  80. college chemistry

    please help! If the initial pressure of I2(g) is 1.738 atm, calculate the % decomposition of I2(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1000 K is 0.254. The initial pressure of the reaction products

    asked by sparkle on October 5, 2010
  81. college chemistry

    If the initial concentration of F(g) is 8.285 mol/L, calculate the % decomposition of F(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kc at 927.0 °C is 370.00. The initial concentration of the reaction products

    asked by sparkle on October 4, 2010
  82. chem

    If the initial pressure of HD(g) is 2.270 atm, calculate the % decomposition of HD(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 727.0 °C is 0.26. The initial pressure of the reaction products is 0 atm.

    asked by BOB on September 30, 2011
  83. chemistry

    Calculate the value of the equilibrium constant (Kp) for the reaction shown, if F(g) was found to be 96.80 % decomposed at 1000 K when its initial pressure was 4.638 atm. The initial pressure of the reaction products is 0 atm. 2F(g) = F2(g)

    asked by andy on April 9, 2010
  84. Chemistry

    I have a question about buffers. Part A So it starts with 20ml 0.1 sodium acetate and 25ml 0.1 acetic acid. Calculate ph of buffer is 4.74 because the acid and conjugate base have the same molarity correct? So the Ph is just pKa (1.8e-5)? Part B So the

    asked by Rio on March 31, 2010
  85. Chemistry

    At 3745°C, K = 0.093 for the following reaction. N2(g) + O2(g) equilibrium reaction arrow 2 NO(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 2.0 g N2 and 3.0 g O2 are mixed in a 1.3-L flask. [N2] [O2]

    asked by Gloria on February 27, 2017
  86. Chemistry/- Dr.Bob222

    A voltaic cell consists of a Zn/Zn2+ half-cell and a Ni/Ni2+ half-cell at 25 C. The initial concentrations of Ni2+ and Zn2+ are 1.50 M and 0.10 M, respectively. a. What is the initial cell potential? My answer: 0.56 B b. What is the cell potential when the

    asked by Nevaeh on June 3, 2016
  87. Chemistry

    Does the reaction rate of a zero order reaction becomes half of its initial value,if the concentration of the reactant becomes half of its initial value?

    asked by Josh on August 17, 2017
  88. Chemistry check my answer?

    Hi! is my answer correct? Consider the following chemical reaction: H2 (g) + I2 (g) 2HI (g) At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M, 0.033 M, and 0.55 M, respectively. The value ofKeq for this reaction is

    asked by Richard on October 26, 2010
  89. Chem 101

    At 600degrees Celcius, gaseous CO and Cl2 are mixed together in a 1.00 L closed container. At the instant they are mixed, their concentrations are CO=.25 mol/L and Cl2= .69 mol/L. After equilibrium is established, their concentrations are CO= .25 mol/L and

    asked by Joni on December 2, 2011
  90. Chemistry

    HA(aq) H+(aq) + A-(aq) K = 5.0 x 10 -9 The initial concentration of HA is 0.30 M What is the final equilibrium concentrations of HA, H+, A-? Show work, solve if you can

    asked by Kay on April 12, 2018
  91. chemistry (ap)

    What will be the reaction rate (formation of C) when the concentrations of A & B are 0.150 M and 0.250 M respectively?

    asked by Yubellkis on February 6, 2017
  92. CHEMISTRY

    What will be the reaction rate (formation of C) when the concentrations of A & B are 0.150 M and 0.250 M respectively?

    asked by Yubellkis on February 6, 2017
  93. Chemistry 109 Chapter 15 exercise 112

    Consider the following generic equilibrium in which a solid reactant is in equilibrium with a gaseous product. A(s) == B (g). The following diagrams represent the reaction mixture at the following points: (a) initially; (b) after a short period of time has

    asked by T.J. on August 2, 2013
  94. CHEMISTRY..please help..thanks

    For the following reaction, it is found at equilibrium at a certain temperature that the concentrations are [CO(g)] = 2.7 multiplied by 10-4 M, [O2(g)] = 1.9 multiplied by 10-3 M, and [CO2(g)] = 1.1 multiplied by 10-1 M. 2 CO(g) + O2(g) reverse reaction

    asked by Jasmin on November 13, 2010
  95. Chemistry

    A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and Cu^2+ are 1.2*10^-4M and 1.5M, respectively, in 1.0-L half-cells. The initial voltage of the battery is 2.83V with the standard

    asked by Emma on May 3, 2010
  96. 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 26, 2008
  97. 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
  98. science

    Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases?

    asked by Ron on August 2, 2011
  99. Chemistry

    Consider the reaction A+B->C+3D. A solution was prepared by mixing 50 ml of .001 M of A, 100 ml of .002 M of B, 10 ml of 1 M of C, and 75 ml of .0015 M of D. At equilibrium, the concentration of D was measured and found to be .0006 M. Calculate the

    asked by Anonymous on January 26, 2014
  100. Chemistry - reaction kinetics

    So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:   Lab Temp 0.2°C   Experiment Trial Time in seconds Trial 1 Trial 2 Average Time   1 1 2 256 275

    asked by Jordan on March 17, 2013