For the reaction C2H6 $ \to $ C2H4 + H2the reaction enthalpy $\Delta$rH = __________ kJ mol$-$1. (Round off to the Nearest Integer).[ Given : Bond enthalpies in kJ mol$-$1 : C-C : 347, C = C : 611; C-H : 414, H-H : 436 ]

Question

For the reaction C₂H₆ $ \to $ C₂H₄ + H₂

the reaction enthalpy $\Delta$_rH = __________ kJ mol^$-$1. (Round off to the Nearest Integer).

[ Given : Bond enthalpies in kJ mol^$-$1 : C-C : 347, C = C : 611; C-H : 414, H-H : 436 ]

Correct Answer

128

Solution

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