Question

Enthalpies of formation of CO(g), CO(g), N2O(g) and N2O4 (g) are -110,-393, 81 and 9.7 kJmol-1

respectively . Find the value of ∆rH for the reaction.

N2O4(g) + 3CO -----------→ N2O + 3CO​

Answer 1

Answer:

(-)(9.7g)(81g/mol)-1 [(1/2)(-72.8 kJ mol–1)] = 4.35 KJ. ... The tabulated molar heat of formation (∆Hf°) for tribromobenzene gas.

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