If at 298K the bond energies of C--H, C-C, C = C, and H-H bonds are respectively 414, 347, 615, and 435 kJ  mol-1. The value of enthalpy change for the reaction

H2C = CH2(g) + H2(g) -->H3C - CH33(g) at 298K will be:

A.
B.
C.
D.
Anonymous User Chemistry 01 Nov, 2020 52 views

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