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Which statement(s) is/are correct?

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Acetylene is insoluble in conc. H2SO4 due to the formation of vinyl carbocation

Ethylene is soluble in conc. H2SO4 due to the formation of alkyl carbocationH3C−CH2⊕HSO4⊖

But -2-yne dissolves in conc. H2SO4 due to the formation of vinyl carbocation (Me−C⊕=CH−Me) HSO4⊖, but it is stabilised by electron-donating methyl group and is more stable than the vinyl carbocation formed from acetylene.

More the s character in the positively charged C, the more stable is the carbocation and more likely is its formation.

answer is A.

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Detailed Solution

vinyl carbo cation is less stable than alkyl carbocationElectron donating groups stabilises vinyl carbocation than vinyl carbocation

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