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The standard enthalpy of formation of NH...

The standard enthalpy of formation of NH3 is -46.0 kJ `mol^(-1)`. If the enthalpy of formation of `H_2` from its atoms is -436 kJ mol and that of `N_2` is -712 kJ mol, the average bond enthalpy of N - H bond in `NH_3` is

A

`-964 kJ mol^(-1)`

B

`+352 kJ mol^(-1)`

C

` + 1056 kJ mol^(-1)`

D

`-1102 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`+352 kJ mol^(-1)`
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