Question

A reaction takes place in two steps:

1. \[\ce{NO_{(g)} + Cl2_{(g)} -> NOCl2_{(g)}}\]
2. \[\ce{NOCl2_{(g)} + NO_{(g)} -> 2NOCl_{(g)}}\]

1. Write the overall reaction.
2. Identify the reaction intermediate.
3. What is the molecularity of each step?

A reaction takes place in two steps:

1. \[\ce{NO_{(g)} + Cl2_{(g)} -> NOCl2_{(g)}}\]
2. \[\ce{NOCl2_{(g)} + NO_{(g)} -> 2NOCl_{(g)}}\]

1. Write the overall reaction.
2. Identify the reaction intermediate.

Answer 1

1. Overall reaction: \[\ce{2NO_{(g)} + Cl_{2(g)} -> 2NOCl_{(g)}}\]
2. Since NOCl₂ is formed in the first step and consumed in the second step, it is the reaction intermediate.
3. The molecularity of each step is 2 because two reactants are involved in each of the steps.