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  • . Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because _________. (i) the reaction is endothermic and requires very high temperature.

Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because _________.
(i) the reaction is endothermic and requires very high temperature.
(ii) the reaction can be initiated only in presence of a catalyst.
(iii) oxides of nitrogen are unstable.
(iv) N_{2} and O_{2} are unreactive.

Answers (1)

The answer is the option (i) the reaction is endothermic, and it requires a very high temperature.

Explanation: The dissociation energy of N_{2} is very high due to the presence of a triple bond, and it is very stable; therefore, these gases do not react with each other at room temperature.

 

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