$[\therefore \,n =\frac{{49.2}}{{12.3}}\,\, = 4 =\frac{{32}}{{{2^4}}} =2\,mg]$
${I_2}\,\underset{{{K_{ - 1}}}}{\overset{{{K_1}}}{\longleftrightarrow}}\,2I\,$ (fast step)
$2I + {H_2}\xrightarrow{{{K_2}}}2HI$ (slow step)
તો પ્રક્રિયાનો વેગનિયમ જણાવો.
| No | $[A_2]\, M$ | $[B_2]\, M$ | rate of reaction |
| $1.$ | $0.1\,M$ | $0.1\,M$ | $1.6 \times {10^{ - 4}}$ |
| $2.$ | $0.1\,M$ | $0.2\,M$ | $3.2 \times {10^{ - 4}}$ |
| $3.$ | $0.2\,M$ | $0.1\,M$ | $3.2 \times {10^{ - 4}}$ |