The vessel containing oxygen and hydrogen gases can exist indefinitely without exploding because the reaction requires an activation energy to initiate the explosive reaction, and this energy may not be available in the given conditions.
A vessel containing oxygen and hydrogen gases can exist indefinitely without exploding because the reaction is usually kinetically inhibited and requires an activation energy to proceed.
A vessel containing oxygen and hydrogen gases can exist indefinitely without exploding because the reaction requires an activation energy to initiate the explosive reaction.