Question

For a general gaseous reaction of the type $R$ $\to$ $P$, if the initial concentration of $R$ is doubled, half-life of the reaction is also doubled, the order of that reaction is:

• A. 0
• B. 1
• C. 2
• D. 3

Answer 1

Answer: (A)

0

For a general gaseous reaction of the type $R\to P$ , if the initial concentration of R is doubled, half-life of the reaction is also doubled, the order of that reaction is 0.
Hence, the option (A) is the correct answer.

Note: For zero-order reaction, the half-life is directly proportional to the initial concentration.

$t_{1/2}=\frac{[A{]}_0}{2k}$