Consider the following data for the given reaction 2HI(g) → H2(g) + I2(g)

Question

Consider the following data for the given reaction

\(2HI_{g}\rightarrow H_{2(g)}+I_{2(g)}\)

	1	2	3
\(HI (mol\,L^{-1})\)	0.005	0.01	0.02
Rate \((mol\,L ^{-1} s^{-1})\)	\(7.5 \times 10 ^{-4}\)	\(3.0 \times 10 ^{-3}\)	\(1.2 \times 10 ^{-2}\)

The order of the reaction is ___.

Answer 1

Correct answer is : (2)

Let, R = k[HI]ⁿ

using any two of given data

\(\frac {3\times 10^{-3}}{7.5\times 10 ^{-4}}=\left(\frac {0.01}{0.005}\right)^n\)

n = 2