Question

$5\text{A}\to$ Product
In above reaction, half-life period is directly proportional to initial concentration of reactant. The initial rate of reaction is $400{\text{mol L}}^{-1}{\text{min}}^{-1}$
Then the order of reaction:

• A. $0$
• B. $1$
• C. $2$
• D. $3$

Answer 1

The correct option is A $0$

The half-life period is directly proportional to the initial concentration of the reactant. Also, the unit of the rate constant is ${\text{mol L}}^{-1}{\text{min}}^{-1}$ .
These are the characteristics of a zero-order raction.
Hence, the correct option is A