Question

If the rate equation of a reaction 2A
+ B - Products is, Rate = K[A]2
[B], and A is present in large excess,
then order of reaction is:
\ fat 1 (b) 2
(c) 3
(d) None of these

Answer 1

Answer:

a) 1

Explanation:

Given:

2A+B --> Product

Rate= K [A]²[B]

If A is present in large excess, then, change in concentration of A will no longer affect the rate of the reaction, which means, the rate is now independent on [A].

Therefore, the rate of the reaction will purely be based on the order of [B], which is simply 1.

Therefore, the rate of the reaction is 1.