Question

A reaction follows the given concentration (M) -time graph. Predict the order of the reaction?

• A. zero
• B. 2
• C. 3
• D. 1

Answer 1

The correct option is D 1

For t=20

$k=\frac{2.303}{20}log\frac{0.4}{0.2}$

$k=0.034s^{-1}$

Also, for t=40

$k=\frac{2.303}{40}log\frac{0.4}{0.1}$

$k=0.034s^{-1}$

So It's a 1st Order Reaction.