Question

$A+B_2\to AB+B$
In the above reaction, the half life is independent of initial concentration of $A$ and is directly proportional to the initial concentration of $B_2$. The rate law is:

• A. $k\left[A\right]\left[B_2\right]$
• B. $k\left[A{]}^2\right[B_2]$
• C. $k\left[A\right]$
• D. $k\left[B_2\right]$

Answer 1

The correct option is C $k\left[A\right]$

In first order reaction, the half life is independent of initial concentration. In zero order reaction, the half life is directly proportional to the initial concentration.
So, the rate law is $=k\left[A\right]$