Explain how each step was sone if possible! 9 A reaction in which A, B, and C re

Question

Explain how each step was sone if possible!

9 A reaction in which A, B, and C react to form products is first order in A, second order in B, and zero order in C. a. Write a rate law for the reaction. b. What is the overall order of the reaction? c. By what factor does the reaction rate change if [A] is doubled (and the other reactant concentrations are held constant)? d. By what factor does the reaction rate change if [B] is doubled (and the other reactant concentrations are held constant)? e. By what factor does the reaction rate change if [C] is doubled (and the other reactant concentrations are held constant)? f. By what factor does the reaction rate change if the concen- trations of all three reactants are doubled?

Explanation / Answer

a.

rate law is rate (r) = k [A]1[B]2[C]0

b.

overall order of the reaction = 1 + 2 + 0 = 3

c.

if A is doubled, the rate also increases by a factor of "2"

d.

if [B] is doubled, the rate will increase by a factor of "4", because it is second order w.r.t to B

e.

if [C] is doubled, no change in rate, because it is zero order w.r.t to C

f.

if all the reactant concnetration are doubled

rate(r) = k [2A]1[2B]2[2C]0 = 8. k. [A][B]2[C]0 = 8 * intial rate

i.e., rate increases by a factor of "8"

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