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Question

The enthalpy changes of formation of the gaseous oxides of nitrogen (N2O and NO) are positive because of:

A
the high bond energy of the nitrogen molecule
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B
the high electron affinity of oxygen atoms
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C
the high electron affinity of nitrogen atoms
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D
the tendency of oxygen to form O2
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Solution

The correct option is C the high bond energy of the nitrogen molecule
The enthalpy changes of formation of the gaseous oxides of nitrogen are positive because of: the high bond energy of NN, more heat is absorbed to break up N2 molecule.
Option A is correct.

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