What is the molecularity and order of the following reaction if rate law is rate…
What is the molecularity and order of the following reaction if rate law is rate $=\mathrm{K}\left[\mathrm{O}_{3}\right][\mathrm{O}]$ respectively?
$\mathrm{O}_{3(\mathrm{~g})}+\mathrm{O}_{(\mathrm{g})} \longrightarrow 2 \mathrm{O}_{2(\mathrm{~g})}$
3 and 2
3 and 1
2 and 2
4 and 2
Solution
$\mathrm{O}_{3(\mathrm{g})}+\mathrm{O}_{(\mathrm{g})} \longrightarrow 2 \mathrm{O}_{2(\mathrm{g})}$
i. rate $=\mathrm{k}\left[\mathrm{O}_{3}\right][\mathrm{O}]$
$\therefore$ Order of reaction $=2$
ii. Molecularity (No. of reactant molecules taking part in reaction) $=2$