`H_(2)O` and O-atom react in upper atmosphere bimolecularly to form two OH radicals. `
Channel: Doubtnut
Date: 2020-08-30

`H_(2)O` and O-atom react in upper atmosphere bimolecularly to form two OH radicals. `DeltaH` for the reaction is 72 kJ at 500 K and energy of activation is 77 kJ `"mol"^(-1).E_(a)` for bimolecular recombination of two OH radicals to form `H_(2)O` and O-atom, will be