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N(2)(g) +3H(2)(g) rarr 2NH(3): DeltaH =-...

`N_(2)(g) +3H_(2)(g) rarr 2NH_(3): DeltaH =- 92 kJ ` is Haber's process for manufacture of `NH_(3)`. What is the heat of formation of `NH_(3)`?

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`Delta_(f)HNH_(3) =- 46 kJ mol^(-1)`
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  2. How does T DeltaS determine the spontaneity of process?

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