Chemistry - GOC Question with Solution | TestHub

ChemistryGOCBond Length, Strength, Cleavage, Rotational Energy BarrierMedium2 minQB

ChemistryMediumsingle choice

The correct order of $C - C$ bond rotational energy barrier for the following:

(I) $CH_{2} = CH - Br$ (II) $CH_{2} = CH - OMe$ (III) $CH_{2} = CH_{2}$ (IV) $CH_{3} - CH_{3}$

Answer:

Solution:

(I) -Br weak +M so less single bond character in double bond.

(II) -OMe better +M so more single bond character in double bond.

(III) $CH_{2} = CH_{2}$ pure double bond more energy required.

(IV) $CH_{3} - CH_{3}$ pure single bond character easy the rotate.

$(III) > (I) > (II) > (IV)]$

Stream:JEESubject:ChemistryTopic:GOCSubtopic:Bond Length, Strength, Cleavage, Rotational Energy Barrier

⏱ 2mℹ️ Source: QB

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