Chemical Kinetics Question 3
Question 3 - 2024 (27 Jan Shift 1)
Consider the following data for the given reaction
$2 \mathrm{HI}{(\mathrm{g})} \rightarrow \mathrm{H}{2(\mathrm{~g})}+\mathrm{I}_{2(\mathrm{~g})}$
| 1 | 2 | 3 | |
|---|---|---|---|
| $\mathrm{HI}\left(\mathrm{molL}^{-1}\right)$ | 0.005 | 0.01 | 0.02 |
| Rate $\left(\mathrm{molL}^{-1} \mathrm{~s}-1\right)$ | $7.5 \times 10^{-4}$ | $3.0 \times 10^{-3}$ | $1.2 \times 10^{-2}$ |
The order of the reaction is ___________
Show Answer
Answer (2)
Solution
Let, $\mathrm{R}=\mathrm{k}[\mathrm{HI}]^{\mathrm{n}}$
using any two of given data,
$\frac{3 \times 10^{-3}}{7.5 \times 10^{-4}}=\left(\frac{0.01}{0.005}\right)^{\mathrm{n}}$
$\mathrm{n}=2$
