5. When acetylene is passed through dil. H2SO4 in thepresence of HgSO4 – InterviewSolution

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1.	5. When acetylene is passed through dil. H2SO4 in thepresence of HgSO4, the compound formed is(a) C2 H5 OH(c) CH3 CHO(b) acetone(d) carbide of Hg
Answer» HgSO4in presence of any acid for eg:dil. H2SO4adds a water molecule to the compound, here acetylene/ethyne.Water is then added according to Markownikoff's addition....Acetylene + H2O -------(Hg+and H+)-----> H3C=CH(OH)Again more water molecules are added.....thus now the C atom has 2 -OH ions......making it unstable..[ CH3-CH(OH)2]Thus formingCH3CHO (ethanal).

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