# For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial

23,145 results, page 5
1. ## SCIENCE 1

Which of the following is a true statement about chemical equilibria in general A.there is only one set of equilibrium concentrations that equal the Kc value B.eqauilibrium is the result of cessation of all chemical change C.at equilibrium the rate of the

asked by Dave on May 11, 2010
2. ## Chemistry

Question: 50cm3 of 0.4 M Ba(OH)2 and 50cm3 of HA of unknown concentration is added together.At 25°C,pH of the solution is 9.With appropriate assumptions calculate the [HA] and ka of HA. My thoughts on the question: There are more than one approach which

asked by Shenaya on May 28, 2017
3. ## Chemistry

Currently studying for an lab exam. Just have a few question about a typical Iodine Clock reaction lab. In an typical Iodine Clock reaction lab what would be the state of effect of an increase in the initial concentration of persulfate ion (S2O3 2-) and

4. ## Chemistry

A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O3(g)+NO(g) --> O2(g)+NO2(g) The rate law for this reaction is: rate=k[O3][NO] Given that k = 2.87 × 106 M–1·s–1 at a certain temperature,

asked by Ceamus Angelina on July 2, 2018
5. ## Chemistry

A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O3(g)+NO(g) --> O2(g)+NO2(g) The rate law for this reaction is: rate=k[O3][NO] Given that k = 2.87 × 106 M–1·s–1 at a certain temperature,

asked by Ceamus Angelina on July 1, 2018
6. ## Chemistry

The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M

asked by Nicole on March 13, 2014
7. ## Chemistry

The equilibrium constant (Keq) is the ratio of ____ concentrations to ____ concentrations at equilibrium, with each concentration raised to a power equal to the number of ____ of that substance in the balanced chemical equation.

asked by MEGAN!!!!!!!!!!! on May 7, 2010
8. ## Chemistry

The equation of a simulated photosynthesis reaction is represented by 6CO2(g) + 6H2O (g) -> C6H12O6(s) + 6O2(g) At 31 degree celcius, tje following equilibrium concentration were found [H2O] = 7.91X10^-2M [CO2]= 9.30X10^-1M [O2]= 2.40X10^-3M Determine the

asked by Lee on October 26, 2018
9. ## chemistry

Hydrogen iodide decomposes according to the reaction 2HI(g)H2(g) + I2(g) A sealed 1.50 L container initially holds .00623 moles of H2, .00414 moles of I2, and .0244 moles of HI at 703K. When equilibrium constant is reached, the concentration of H2(g) is

asked by jude on September 29, 2015
10. ## 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 JJ on April 5, 2012
11. ## Chemistry

For the reaction 4A (g)+3B (g)=C(g) the following data were obtained at constant temperature: Experiment- 1. Initial (A) (mole/L) 0.0500, 01000, 01000 , 0.0500 2. Initial (B) (mole/L) 0.0500, 0.0500, 0.1000, 0.0500 3. Initial (C)(mole/L) 0.0100, 0.0100,

asked by Munavvar on February 28, 2015
12. ## chemistry

disappearance of NO in ...- Help!!!? The following data were collected for the rate of disappearance of NO in the reaction 2 NO(g) + O2(g) ¨ 2 NO2(g). Run: [NO](M) [O2](M) Initail Rate (M/s) 1 .0126 .0125 1.41 X 10^-2 2 .0252 .0125 5.64 X 10^-2 3 .0252

asked by Hannah on January 30, 2013
13. ## chemistry

Which of the following is true of the solubility product constant? A. It is the product of the initial concentrations of the ions in a solution. B. It is an equilibrium constant. C. It is an equilibrium position. D. Its value changes in the presence of a

asked by emma on September 10, 2016
14. ## chemistry help

Which of the following is true of the solubility product constant? A. It is the product of the initial concentrations of the ions in a solution. B. It is an equilibrium constant. C. It is an equilibrium position. D. Its value changes in the presence of a

asked by emma on September 10, 2016
15. ## Chemistry help

What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.26 M silver nitrate with 150.0 mL of 0.24 M calcium chloride? Also, Calculate the concentrations of each ion remaining in solution after precipitation is complete. Cl ‾ NO3‾

asked by Ashley on June 21, 2013
16. ## Chemistry

What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.26 M silver nitrate with 150.0 mL of 0.24 M calcium chloride? Also, Calculate the concentrations of each ion remaining in solution after precipitation is complete. Cl ‾ NO3‾

asked by Ashley on June 21, 2013
17. ## chemistry

equilibrium constant = 2.180 x 10^6 @ 730 C. H2 (g) + Br (g) 2HBr (g) (reversible) startin with 3.20 moles of HBr in a 21.3-L reaction vessel, calculate the concentrations of H2, Br2, and HBr at equilibrium idk how to start my ice table

asked by Anonymous on March 31, 2014
18. ## chemistry

A voltaic cell at 25oC consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the initial concentrations [Mn2+] = 0.100 M and [Cd2+] = 0.0100 M. Use the Nernst equation to calculate E for this cell. Cd+2(aq) + 2e- = Cd(s) . . . . . . Eo = -0.40 V Mn+2(aq) + 2e- =

asked by nj on November 30, 2008
19. ## chem

A 1.00 L volume of buffer is made with concentrations of 0.350 M NaCHO2 and .550 M HCHO2. a) What is the initial pH of the buffer? b) What is the pH after the addition of .0050 mol HCL? c) What is the pH after the addition of .0050 mols NaOH?

asked by Symone on December 5, 2010
20. ## chemisty

The initial concentration of NO2 in a closed container is 0.750M. At equilibrium the concentration of O2 is 0.125M. What are the concentrations of NO2 and NO at equilibrium? 2NO2 (aq) ==== 2NO (aq) + O2 (aq)

asked by S on March 1, 2015
21. ## 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?

asked by Marcus on February 17, 2013
22. ## chemistry,

the question is, if concentrations do not change why is the equilibrium state considered dynamic? First of all I don't understand what makes a state dynamic? The reaction is not stopped, it is going forward, and reverse, at the same rate. Molecules are

asked by amy on February 21, 2007
23. ## Chemistry

At 2000°C, 5.0×10-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium: 2CO2(g) 2CO(g) + O2(g) Kc = 6.4×10-7 a. Calculate the equilibrium concentrations of CO and O2. b. What fraction of the CO2 is decomposed at

asked by mg on October 18, 2010
24. ## chemistry

When 10.0 mL of 0.012 M pb(NO3)2 is mixed with 10.0 mL of 0.030 M KI, a yellow precipitate of PbI2(s) forms. a)Calculate the molarity of [Pb^2+] b)Calculate the initial molarity of [I^-] c)On measuring the equilibrium concentrations of [I^-] it came out to

asked by Anonymous on August 15, 2010
25. ## Chemistry

The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled

asked by Help on December 4, 2012
26. ## Chemistry

The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled

asked by T on December 6, 2012
27. ## Chemistry

The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled

asked by lisa on December 4, 2012
28. ## Chemistry

PCl5 --> PCl3 + Cl2 A 0.318 mol sample of PCl5(g) is injected into an empty 4.15 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.

asked by Jordyn on April 22, 2014
29. ## AP chem

The experiment can be extended to determine the order of reaction m with respect to [OH-] by varying the concentration of hydroxide ions [OH-] Assume that the value of the pseudo-rate constant k’ was measured for two different concentrations of [OH-].

asked by Alexa on October 26, 2015
30. ## chemistry

At 850 K, the value of the equilibrium constant Kp for the ammonia synthesis reaction N2(g) + H2(g) N2H2(g) is 0.1690. If a vessel contains an initial reaction mixture in which [N2]=0.0150 M, [H2]=0.0200 M, and [N2H2]=0.000250 M, what will the [N2H2] be

asked by Victoria on November 5, 2012
31. ## chemistry

C2H4O(g) ¨ CH4(g) + CO(g) Find the rate law of C2H4O? The following kinetic data were observed for the reaction at 688 K. Initial Concentration of Ethylene Oxide Initial Rate Exp. 1: 0.00272 M 5.57 10-7 M/s Exp. 2: 0.00544 M 1.11 10-6 M/s

asked by Nagaa on January 22, 2011
32. ## chem help!!

The following equilibrium concentrations were observed for the Haber process at 127 oC: [NH3] = 3.1 x 10-2 mol L-1 [N2] = 8.5 x 10-1 mol [H2] = 3.1 x 10-3 mol Calculate the value of K at 127 oC for this reaction

asked by xx on May 31, 2011
33. ## Math

A car is projected directly up an incline and its location from its start point is given by the formula s = 9t - 5t2. Determine its initial velocity and initial acceleration. initial velocity in m/s = initial acceleration in m/s2 = My Answer s'=9-10t

asked by Brownie on January 29, 2013
34. ## Chemistry Help

The most effective buffer solutions have equal concentrations of salt and acid (or base). Find the pH of a buffer solution with equimolar concentrations of: (a) HCOOH and NaCOOH (Ka = 3.5 x 10-4 for HCOOH) (b)CH3NH2 and CH3NH3Cl (Kb = 3.7 x 10-4 for

asked by Luke on February 23, 2017
35. ## science

what type of reaction is this 2h2o2 (l) -> 2h2o(l)+ o2 (g) a.single replacement reaction. b.decomposition reaction. c.acid-base neutralization reaction. d.no reaction.

asked by bri;) on May 2, 2017
36. ## Chemistry!!! PLZ PLZ HELP!!

Calculate the equilibrium amounts of each susbtance in the reaction below if an initial amount of 0.1 moles of H2 are brought together with an initial amount of 0.2 moles of I2 and then equilibrium is established at 900K. Kc at this temperature=70. H2 + I2

asked by Sabrina on May 30, 2016
37. ## chemistry

Reactants for the following reaction are placed in a 10.0 L flask held at 250 degrees C and at initial partial pressures of 1.00 atm each. Calculate the final pressures of each reactant and product, assuming the reaction goes to completion. 4 N2O(g) +

asked by Kyle on November 11, 2010
38. ## chemistry

Choose all of the following statements about the equilibrium constant K that are true: (a) If the K value for a reaction is > 1 then Go must be negative for this reaction (b) A large value for K implies there is a strong driver for the reaction to proceed

asked by James on March 28, 2010
39. ## chemistry

What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water? a.exothermic reaction b.endothermic reaction c.synthesis reaction d.irreversible reaction

asked by nina on June 11, 2011
40. ## chemistry

Calculate the concentrations of all ions after 50.0 mL of a 0.100 M AgNO3 solution is mixed with 100.0 mL of a 1.00 M Na2SO4 solution.For Ag2SO4 Ksp = 1.2 x 10-5 Do I first do MiVi=MfVf and then using the two concentrations I use ksp value? I'm just so

asked by Anon on April 29, 2015
41. ## Chem13

The reaction CO(g) + 2 H2(g)--> CH3OH(g) was studied using a 5.19 L flask and an initial condition of 26.9 g CO and 2.34 g H2. At equilibrium, the flask contains 8.34 g CH3OH. Calculate Kc for this reaction.

asked by Ryan on May 2, 2011
42. ## Chemistry

A voltaic cell consists of a Pb /Pb^2+ half-cell and a Cu/Cu^2 half-cell at 298K. The initial concentrations of Pb^2+ and Cu^2 are 5.20×10−2 M and 1.40 M, respectively.

asked by Emma on April 28, 2010
43. ## chemistry

Some hydrogen and iodine are mixed up at 229 degrees celsiusin a 1-L container. When equilibrium is established, the following concentrations are present: [HI]= 0.490M, [H2]=0.080M, and [I2]= 0.060M. If an additional 0.300 mol of HI is then added, what

asked by jlh on December 15, 2010
44. ## CHEMISTRY

When doing an ICE Chart in Chemistry, when do you know whether the C is a negative or positive? I was told if the problem gives us reactant concentrations and no product concentration then the reaction goes forward and make the reactant lose and the

asked by TP on March 4, 2018
45. ## chem

the following reaction occurred at 45 degrees all gases h2+f2=2hf the equlibrium conc in a 5ml container are h2=.0500m, f2=.0100m and hf =.400m. if .200ml of f2 is added calculate the concentrations and pressures of all gases once equlibrium is

asked by sid on December 17, 2014
46. ## Chem

Can someone explain how to do this problem? For the equilibrium reation below, 288g of liquid water and 448 g of carbon monoxide are placed in an 8.00 liter container and heated to 900 K. If the value of K_c for the reaction at 900 K is 1.56, what are the

asked by Anonymous on May 25, 2010
47. ## Chemistry

Given that the initial rate constant is 0.0190s−1 at an initial temperature of 22 ∘C , what would the rate constant be at a temperature of 190 ∘C for the same reaction described in Part A? Activation Energy 32.4kJ/mol

asked by Anonymous on February 12, 2015
48. ## Chemistry

The rate constant for a certain reaction is = 4.30×10−3 s^-1. If the initial reactant concentration was 0.400 M , what will the concentration be after 19.0 minutes? Rate would be first order therefore I used. A=A initial*e^-kt I keep getting .0030 M but

asked by Joanna on January 31, 2010
49. ## chemistry

Reaction: CaCO3 + 2 HCl -> CaCl2 + CO2 + H2O Calculate the molarity of hydrochloric acid solution if an initial mass of 4.568g of CaCO3 was reacted with 25.0mL of the acid and 2.678g of CaCO3 remain after the reaction is complete.

asked by Jody on November 30, 2012
50. ## chemistry

If I use 0.524g of Mg to react with 60.0mL of 1.0M H+. The density of H+ is 1.00 g/mL, and the specific heat capacity equals what water's is. The Final and Initial temp. are 65.8 and 22. Mg(s) + 2H+(aq) ----> Mg2+(aq) + H2(g) so to find the deltaH of this

asked by emily on March 22, 2011
51. ## Chemistry

Currently studying for an lab exam. Just have a few question about a typical Iodine Clock reaction lab. In an typical Iodine Clock reaction lab what would be the state of effect of an increase in the initial concentration of persulfate ion and the increase

52. ## Chemistry

A student places a zinc electrode in a 0.80 M Zn2+(aq) solution which is connected by an electrolyte to a 1.30 M Ag+(aq) solution containing a silver electrode. (Note that the solution concentrations are not standard). Determine the initial voltage of the

asked by CHEM HELP ASAP on May 13, 2014
53. ## Chemistry

A student places a zinc electrode in a 0.80 M Zn2+(aq) solution which is connected by an electrolyte to a 1.30 M Ag+ (aq) solution containing a silver electrode. (Note that the solution concentrations are not standard). Determine the initial voltage of the

asked by Tom on May 13, 2014
54. ## Chem

If the initial pressure of HD(g) is 8.913 atm, calculate the % decomposition of HD(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1000 K is 0.26. The initial pressure of the reaction products is 0 atm.

asked by May on October 2, 2016
55. ## c

mixture is prepared by adding 27.0 mL of 0.169 M Na3PO4 to 35.1 mL of 0.234 M Ca(NO3)2. (a) What mass of Ca3(PO4)2 will be formed? (b)What will be the concentrations of each of the ions in the mixture after reaction? Put your answers with 3 significant

asked by walter on June 13, 2015
56. ## 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
57. ## chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 6.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by NIK on November 29, 2012
58. ## chemistry-rate of reaction

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 3.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by Ron on December 2, 2012
59. ## chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 2.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by mike on November 29, 2012
60. ## chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 6.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by sveta on November 29, 2012
61. ## Science

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 1.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by Shelly on December 5, 2012
62. ## Chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor

63. ## chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 2.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by Anonymous on December 8, 2012
64. ## Chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 4.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by Odesa on November 29, 2012
65. ## Chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled

66. ## chemistry

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 5.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor

asked by maliya on November 30, 2012
67. ## chemistry

Need some help. have the A part of the question but do not know how to set B or C. Butadiene (C4H6) reacts with itself to form a dimer with the formula C8H12. The reaction is second order in butadiene. If the rate constant at a particular temp is 0.04/(M

asked by Anna on April 22, 2010

consider the reaction: CO(aq) + Cl2 (aq) --> COCl2 (aq). Calculate Delta G at non standard conditions. T = 298.15K. Concentration of COCl2 is reduced to 0.01832 M while the concentrations of CO and Cl2 remain 1M. Delta G rxn = -67.4 kj.

asked by Tara on November 24, 2010
69. ## Chemistry

The following rearrangement reaction is first order: C3H6 ¨ CH3CH=CH2 The rate constant for this reaction is 6.7 ~ 10−4. How many minutes will it take for the concentration of C3H6 to drop to 11.75% of its initial value? How do I calculate this step

asked by Alex on March 20, 2011
70. ## Chemistry

With the initial concentrations of [SCN]= 0.0005 M, [Fe3+]= 0.000698M, and [Fe(SCN)2+]=0.000M, determine the value of k if the [Fe(SCN)2+] at equilibrium is 0.0000866M. Fe3+(aq) + SCN (aq) = Fe(SCN)2+ (aq)

asked by Marcelo on June 8, 2011
71. ## Chemistry

The equation of simulated photosynthesis is represented by 6CO2(g) + 6H2O(g)-> C6H12O6(s) + 6O2(g) At 31 degree Celcius, the following equilibrium concentration were found. [H2O] = 7.91X10^-2M [CO2] = 9.30X10^-1M [O2] = 2.40X10^-3M My question is how to

asked by Lee on October 26, 2018
72. ## Chemistry II

The equlibrium constant Kc for the reaction: has the value of 4.00 at 500K. If a mixture of 1.00 mol CO and 1.00 mol H2O is allowed to reach equilibrium at this temperature in a 1.00L flask, calculate the equilibrium concentrations of each species in the

asked by curtis on April 11, 2010
73. ## chemistry

Calculate ∆T for the reaction. Assume the initial temperature of both reactants is 25.0◦C. Calculate the volume of the reaction mixture. Calculate the mass of the reaction mixture. Assume the density of the mixture is 1.03 g mL^(-1). Calculate the heat

asked by Anonymous on October 22, 2014
74. ## Chemistry 112

4Nh3(g) +3O2(g)=2N2(g)+6H2O(g) has kp=2.1x10^6 atm. Initial concentration of NH3=2.00 atm, and N2=1.00 atm, with all other concentrations being zero. Compute final concentration of NH3.

asked by Dominique on September 19, 2011
75. ## Chemistry

Calculate the cell potential for a cell based on the reaction Cu(s) + 2Ag+(aq) -> Cu2+(aq) + 2Ag(s) when the concentrations are as follows: [Ag+]= 0.53 M, [Cu2+] = 0.9 M. (The temperature is 25◦C and E0 = 0.4624 V.) Answer in V.

asked by Alex on October 24, 2010
76. ## Chemistry

Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) ⇌ PCl3(g) + Cl2(g) A 0.304 mol sample of PCl5(g) is injected into an empty 4.75 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at

asked by Dee on April 2, 2013
77. ## chemistry

Which statement describes a chemical reaction at equilibrium? A. The forward reaction happens slightly faster than the reverse reaction. B. The reaction has stopped because all reactants have been used up. C. The forward reaction happens at the same rate

asked by emma on September 10, 2016
78. ## 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
79. ## Chemistry- urgent!

When a solution of sodium oxalate (Na2C2O4) is added to a solution of lanthanum (III) chloride, lanthanum oxalate (molar mass 541.86 g/mol) The balanced net ionic equation for the reaction is: 3C2O4^2- (aq) + 2La^3+ (aq) --> La2(C2O4)3 (s) Thirty ml of

asked by Gabby on December 15, 2011
80. ## Chemistry (equlibrium direction) urgent

Consider the endothermic reaction 2 NO(g) N2(g) + O2(g) -If I decrease the volume of the vessel and increasing the total pressure in the vessel, what direction will the equilibrium will shift? (left/right) (I know that decreasing the volume would shift to

asked by Ray on December 4, 2016
81. ## Chem

Consider the reaction: A(g)⇌2B(g) Find the equilibrium partial pressures of A and B for each of the different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make

asked by Chris on May 15, 2015
82. ## chemistry

Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

asked by CHEM on March 16, 2009
83. ## chemistry

Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

asked by CHEMistry on March 16, 2009
84. ## As physics

How do you calculate the braking distance? driver reaction time=0.6s initial speed of car=30ms-1 speed*2= distance*4 Please show all the steps and the equations you used in words the question states initial speed*2 is equal to = distance*4 If you need

asked by Jan on November 30, 2017
85. ## Chemistry

at 23C the reaction CaCrO4 -> Ca2+ + CrO42- has an equilibrium constant of 7.1 x 10-4. what are the equilibrium concentrations of Ca2+ and CrO42- in a saturated solution?

asked by Ry on March 22, 2010
86. ## chemistry

Use the initial pH of the acetic acid solution to find the initial [H3O+] and initial [CH3COO-]. I have an initial pH of 2.2 Thanks

asked by Sarah on April 6, 2008
87. ## Chemistry

i need help with a rate law question: The reaction is 2ClO2(aq) + 2OH -(aq)---> ClO3-(aq)+ ClO2-(aq) + H2O(l) Experiment 1: [ClO2]0= 0.0500 [OH-]0= 0.100 INITIAL RATE= 5.75*10^-2 Experiment 2: [ClO2]0= 0.100 [OH-]0= 0.100 INITIAL RATE= 2.30*10^-1

asked by Saira on June 2, 2009
88. ## Chemistry

The degradation of CF3CH2F (an HFC) by OH radicals in the troposphere is first order in each reactant and has a rate constant of k=1.6×108M−1s−1 at 4∘C. If the tropospheric concentrations of OH and CF3CH2F are 8.1×105 and 6.3×108 molecules cm−3,

asked by Rebecca on March 25, 2014
89. ## Chemistry

Please help me on this for my Midterm Review thank you very much... 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.

asked by Jessie on October 16, 2012
90. ## Chemistry

Find the enthalpy of combustion of magnesium using Hess' law given the following data (assume that exactly 100.0 mL of HCl was used in each trial and that HCl is in excess) Magnesium/HCl reaction: Grams of Mg= 0.244g Initial temp= 32.2 degrees celsius

asked by Liz on July 21, 2014
91. ## Chemistry

A sample of air was passed through an electrical discharge causing the following reaction N2(g) + O2(g)->2NO(g) . Assuming that 1.00 mole of air (78% N2, 21% O2) was originally present at 1.00 atm, determine the partial pressure (in atm) of NO at

asked by Anonymous on November 25, 2015
92. ## Chemistry

K=1.6x10^-5 mol/L for the following reaction 2NOCl(g).... 2 NO(g) + Cl2(g) Calculate the concentrations of all species at equilibrium for each of the following original mixtures E) 2.4 mol of NOCl, 2.4 mol of NO, and 1.2 mol Cl2 in a 1.0 L flask F)1.9

asked by AMANDA on November 20, 2007
93. ## CHEMISTRY

A STUDENT STUDYING THE FE+3- HSCN equilibrium put into a test tube 10.00ml of 2.00 x 10-3 M Fe(NO3)3 with 10.0 mL of 2.00 x 10-3 M HSCN.THE H+ in the resulting solution was manteined at 0.500.By spectrophotometric analysis of the equilibrium solution, the

asked by da on September 18, 2011
94. ## Chemistry

How do I start an ICE table from the following information: BrCl3(g)+ Cl2(l) -> BrCl5(g) where Kp=7.8*10^-6 and there is originally 0.215 atm BrCl3, 725g Cl2, 0.115 atm BrCl5 - Can pressures be used as initial concentrations?

asked by Ken on October 2, 2012
95. ## (11) Chemistry - Science (Dr. Bob222)

In the following hypothetical reaction A + B → C + D, the equilibrium constant, Keq is less than 1.0 at 25°C and decreases by 35% on changing the temperature to 45°C. What must be true according to this information? A. The ΔH° for the reaction is

asked by Ana on May 7, 2014

I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) -> 2B (g) Find the equilibrium partial pressures of A and B

asked by Student on February 24, 2012
97. ## chemistry help!!!!!

Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0

asked by student on March 11, 2012
98. ## Chemistry

A XX-g sample of methane, CH4, is mixed with YY atm of O2 (an excess) in a VV L combustion chamber at 125.0°C. The combustion reaction to CO2 and H2O is initiated and the vessel is cooled back to 125.0°C. What is the final pressure in the combustion

asked by Jack on February 25, 2007
99. ## Huck fin

If you have read Huckleberry Finn before, what was your initial reaction to it?

asked by Jordan on January 20, 2012
100. ## Chemistry

What mass of silver chloride can be prepared by the reaction of 160.0 mL of 0.25 M silver nitrate with 110.0 mL of 0.20 M calcium chloride? Calculate the concentrations of each ion remaining in solution after precipitation is complete. (Enter a 0 if none

asked by Sam on March 13, 2013