Question

The rate of a reaction at different times $(-\frac{dx}{dt})$ is found as follows.

Time (in minutes)	Rate (in mole $L1S1)$
$0$	$2.80\times {10}^{-2}$
$10$	$2.78\times {10}^{-2}$
$20$	$2.81\times {10}^{-2}$
$30$	$2.79\times {10}^{-2}$

The order of reaction is:

• A. Zero
• B. One
• C. Two
• D. Three

Answer 1

Answer: (A)

Zero

The rate does not change with time so

$\vartheta =k\to$constant

Thus it is $zero$ order