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Ammonia is produced directly from nitrogen and hydrogen by using the Haber process. The chemical reaction...

Ammonia is produced directly from nitrogen and hydrogen by using the Haber process.

The chemical reaction is N2(g)+3H2(g) ---> 2NH3 (g)

(a) Use bond enthalpies to estimate the enthalpy change for the reaction, and tell whether this reaction is exothermic or endothermic

(b) Compare the enthalpy change you calculate in (a) to the true enthalpy change as obtained using ∆Hf° values. (∆Hf° of ammonia is -46.19 kJ/mol)

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