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The standard enthalpy of formation of... The standard enthalpy of formation of ammonia at 25C is-46.3 kimol, Estimate the N-

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Answer #1

The reaction that occurs is:

N2 + 3 H2 = 2 NH3

It has the expression:

ΔHr = (N = N) + (3 * H-H) - (6 * N-H)

- 46.3 = 941.4 + (3 * 436.4) - (6 * N-H)

It clears N-H = 383 kJ / mol

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