chemistry

Consider the following reaction:

CH3X + Y  CH3Y + X

At 25oC, the following two experiments were run, yielding the following data:

Experiment 1 : [Y]0 = 3.0 M

[CH3X] Time(hr)

7.08 x 10-3M 1.0
4.52 x 10-3M 1.5
2.23 x 10-3M 2.3
4.76 x 10-4M 4.0
8.44 x 10-5M 5.7
2.75 x 10-5M 7.0


Experiment 2:[Y]o= 4.5 M

[CH3X] Time(hr)

4.50 x 10-3M 0
1.70 x 10-3M 1.0
4.19 x 10-4M 2.5
1.11 x 10-4M 4.0
2.81 x 10-5M 5.5

Experiments were also run at 85oC,. The value of the rate constant at 85oC was found to be 7.88 x 108 (units are in terms of hours)., where [CH3X]o = 1.0 x 10-2M and [Y]o = 3.0 M

a- Determine the rate law and the value of k for the reaction at 25oC

b- Determine the half-life at 85oC

c- Determine Ea for the reaction

d- Given that the CX bond energy is 320 Kj/mol, suggest a mechanism that explains the results in parts a and c

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. 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

  2. chemistry

    Given these standard reduction potentials at 25oC: Cr3+ + e- -> Cr2+ (E1^o = -0.407V) Cr2+ + 2e- -> Cr(s) (E2^o = -0.913V) Determine the standard reduction potential at 25oC for the half-reaction equation: Cr3+ + 3e- -> Cr(s) This

  3. 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.

  4. Chemistry--need help!

    1. Which of the following statements is true about reaction rates? a. Reaction rates can be predicted from the coefficients of the balanced equation. b. Reactants usually disappear faster than the products appear. c. Reactants

  1. (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

  2. Chemistry

    A reaction has a standard free-energy change of –10.30 kJ mol–1 (–2.462 kcal mol–1). Calculate the equilibrium constant at 25ºC.? This is what I've done so far.. ∆Gº= -2.3 RT + log (K) -10.31 kJ = -2.3 (.0083145)(298)

  3. Chemistry

    The following reaction has a Delta G value of 42.6 kJ/mol at 25oC: HB(aq) +H2O(l) --> H3O+(aq) +B-(aq) Calculate Ka for the acid HB.

  4. Chemistry-rate laws

    1. Determine the overall reaction order for the reaction whose rate law is as follows: rate=k[O3][ClO]: a. 0 b. 1 c. 2 *** d. 3 2. For the reaction (A→2B) whose rate law is rate=k, which of the following will change the value of

  1. Chemistry

    What does adding a catalyst to a reaction do? Select all that apply. increase the amount of each product formed by the reaction lower the activation energy of the reaction (correct) alter the orientation of reactants in the

  2. Chemistry

    Identify the correct statement for the following reaction: Br2 (l) → Br2 (g) ΔH° = 30.9 kJ ΔS° = 93.2 J/K A) The reaction is always spontaneous. B) The reaction is never spontaneous. C) The reaction is at equilibrium;

  3. chemistry

    Ethanol (C2H6O) is combusted with oxygen to produce carbon dioxide and wateraccording to the following reaction: C2H6O + 3O2 -----> 2H2O + 3CO2 If 50g of ethanol is combusted, determine the volume of carbon dioxide that will be

  4. chemistry

    can i please get some help with this? For the equilibrium reaction involving the formation of ammonia, which can be described by the reaction below, describe the effect of adding H2 gas to the reaction, increasing the pressure in

You can view more similar questions or ask a new question.