Question

Among ethane, ethene and Ethyne the C - C bond energy is
(a) same in all the three compounds
(b) greater in ethyne
(c) greater in ethene
(d) greater in ethane
Answer quickly plzz....

Answer 1

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$\huge\pink{\mathbf{ANSWER}}$

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• C−H bond energy in ethane =410kJ/mol

• C−H bond energy in ethene =451kJ/mol

• C−H bond energy in ethyne =536kJ/mol

So, C−H bond energy in ethyne is maximum.

Note: H attached to more electronegative C has more bond energy.