For the elementary reaction A +B rightarrow C+D, what is the predicted rate law?
ID: 521460 • Letter: F
Question
For the elementary reaction A +B rightarrow C+D, what is the predicted rate law? A) Rate = k [A] [B] B) Rate = k [B]^2 C) Rate = k [C] [D]/[A] [B] D) Rate = k [A]^2 E) Rate = k [A]/[C] Below is a proposed mechanism for the decomposition of H_2O_2. H_2O_2 + I^- rightarrow H_2O + IO^- slow H_2P_2 + IO^- rightarrow H_2 O + O_2 + I^- fast Which of following statements is incorrect? A) The net reaction is 2H_2O_2 rightarrow 2H_2O + O_2. B)The reaction is first-order with respect to [I^-] C) The reaction is first-order with respect to [H_2O_2]. D) IO^- is a catalyst. E) I^- is a catalyst.Explanation / Answer
A + B -------------> C + D
in elementary reaction rate of reaction is directly proportional to rpoduct of conc of reactant.
Rate = K[A][B]
A. Rate = K[A][B]
3. H2O2 + I- ---------------> H2O + IO- slow step
H2O2 + IO- ----------> H2O + O2 + I- fast
Slow step is rate determining step
Rate law
Rate = K[H2O2][I-]
I- is catalyst
IO- is intermediate
D.IO- is a catalyst