Question

Based on the following reaction and rate data:
$A\left(g\right)+B\left(g\right)\to products$

Experiment	$\left[A\right]$ mol/L	$\left[B\right]$ mol/L	Initial Rate (M/s)
1	0.060	0.010	0.040
2	0.030	0.010	0.040
3	0.030	0.020	0.080

What is the order of the reaction with respect to $B$?

• A. 0
• B. 1
• C. 2
• D. 3
• E. 4

Answer 1

The correct option is B 1

Analyzing from row $2$ and $3$ ,when change in concentration of $B$ is doubled then initial rate of reaction also doubles so rate of reaction is varying in same order as concentration of B. Hence reaction is first order with respect to $B$.