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When diphenyl acetylene is treated with ...

When diphenyl acetylene is treated with dilutesulphuric acid in presence of mercuric sulphate at `60-70^@C`, which product is formed ? Give equation .

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Benzyl phenyl ketone is formed in the above reaction.
`C_(6)H_(5)-C-=C-C_(6)H_(5)+H_(2)O rarr [C_(6)H_(5)-CH=overset(HO)overset(|)(C)-C_(6)H_(5)] hArr C_(6)H_(5)-CH_(2)-overset(O)overset(||)(C)-C_(6)H_(5)`
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