Question

For the reaction : ${H2 + Cl2 ->[{\text{sunlight}}] 2HCl}$ the order of reaction is

• A. 0
• B. 2
• C. 1
• D. 3

Answer 1

Answer: (A)

0

Answer 2

Photochemical reaction between $H _{2}$ and $Cl _{2}$ is zero order reaction, the concentration of gases per unit volume in the gascous phase will not change with time, although the quantities will change.