For a first order reaction, $\left( A \right) \to products$, the concentration of A changes from $0.1\;M$ to $0.025\;M$ in 40 minutes. The rate of reaction when the concentration of A is $0.01\;M$, is:

$3.47 \times {10^{ - 4}}{\rm{\;M}}/\min $

$3.47 \times {10^{ - 5}}{\rm{\;M}}/\min $

$1.73 \times {10^{ - 4}}{\rm{\;M}}/\min $

$1.73 \times {10^{ - 5}}{\rm{\;M}}/\min $

NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

1 Hard

1 of 1

Application +4 | -1

For a first order reaction,

\left( A \right) \to products

, the concentration of A changes from

0.1\;M

0.025\;M

in 40 minutes. The rate of reaction when the concentration of A is

0.01\;M

, is:

View answer and explanation

Correct option: A

3.47 \times {10^{ - 4}}\mathrm{\;M}/\min

Option A (

3.47 \times {10^{ - 4}}\mathrm{\;M}/\min

) is correct because it is the rate of the reaction calculated using the first-order rate constant and the given concentration.