The following homogeneous gaseous reactions were experimentally found to be second order overall. $1.\;2{\rm{NO}} \to {{\rm{N}}_2} + {{\rm{O}}_2}$ $2.\;3{{\rm{O}}_2} \to 2{{\rm{O}}_3}$ ${\rm{3}}{\rm{.}}\;{{\rm{N}}_2}{{\rm{O}}_3} \to {\rm{NO}} + {\rm{N}}{{\rm{O}}_2}$ ${\rm{4}}{\rm{.}}\;{{\rm{H}}_2} + {{\rm{I}}_2} \to 2{\rm{HI}}$ Which of these are most likely to be elementary reaction that occur in one step?

NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

1 Easy

1 of 1

Analyzing +4 | -1

The following homogeneous gaseous reactions were experimentally found to be second order overall.

1.\;2\mathrm{NO} \to {\mathrm{N}_2} + {\mathrm{O}_2}

2.\;3{\mathrm{O}_2} \to 2{\mathrm{O}_3}

\mathrm{3}\mathrm{.}\;{\mathrm{N}_2}{\mathrm{O}_3} \to \mathrm{NO} + \mathrm{N}{\mathrm{O}_2}

\mathrm{4}\mathrm{.}\;{\mathrm{H}_2} + {\mathrm{I}_2} \to 2\mathrm{HI}

Which of these are most likely to be elementary reaction that occur in one step?

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Correct option: C

1 and 4

Option C (1 and 4) is correct because bimolecular elementary reactions are more common and likely to occur in one step.