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Standard XII

Chemistry

The Cannizaro Reaction

The relative ...

Question

The relative rate of acid catalysed dehydration of following alcohols would be

III > I > IV > II

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III > IV > I > II

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I > III > IV > II

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III > IV > I > II

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Solution

The correct option is B III > IV > I > II
Since acid catalysed dehydration follow product formation via formation of carbocation and relative stability of carbocation is $3^{0} > 2^{0} > 1^{0}$ also, option (iv) will undergo methyl shift leading to formation of $3^{0}$ carbo cation

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The relative rate of acid catalysed dehydration of following alcohols would be

The correct option is B III > IV > I > IISince acid catalysed dehydration follow product formation via formation of carbocation and relative stability of carbocation is 30>20>10 also, option (iv) will undergo methyl shift leading to formation of 30 carbo cation

The correct option is B III > IV > I > II
Since acid catalysed dehydration follow product formation via formation of carbocation and relative stability of carbocation is $3^{0} > 2^{0} > 1^{0}$ also, option (iv) will undergo methyl shift leading to formation of $3^{0}$ carbo cation