Chapter 20, Problem 46E

If even tiny sped is introduced into a mixture of ${\text{H}}_{\text{2}}\left(\text{g}\right)$ and ${\text{O}}_{\text{2}}\left(\text{g}\right)$ , a highly exothermac explosive reaction occurs Without the spark the mixture remain unreacted endefindely.

1. Explain the defference in behavior
2. Why is the nature of the reaction independent of the sate of the spark?