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Which of the following reaction has positive value of enthalpy change (∆H)?

Which of the following reaction has positive value of enthalpy change (∆H)?

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Grade:11

1 Answers

Mahima Kanawat
1010 Points
2 years ago
Dear student 
Generally combustion reactions are exothermic and (Delta) H is negative but combustion of N2 is endothermic beacuse a large amount of energy is required to break N, N triple bond.
Therefore option 2 has positive (Delta) H
WITH REGARDS 
MAHIMA 
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