C−Cl bond strength in vinyl chloride is _______ to that in chloroethane.
A
weaker
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B
equal
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C
stronger
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D
none of the above
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Solution
The correct option is C stronger
CH2=CH−Cl↔CH−2−CH=Cl+
Due to resonance in vinyl chloride, C−Cl bond acquire some double bond character while in chloroethane, C−Cl bond is pure, single sigma covalent bond Hence, C−Cl bond in vinyl chloride is stronger than in chloroethane.