1.

The bond energies of C-C,C=C, H-H and C-H bonds are 350 kJ mol^-1, 600 kJmol^-1, 400 kJmol^-1 and 410 kJmol^-1 respectively. The enthalpy of hydrogenation of ethane is _______________.

Answer»

`-170`KJ
`-260`kJ
`-400`kJ
`-450`kJ

Answer :A


Discussion

No Comment Found