(CH_3)_2SiCl_2 undergoes hydrolysis but (CH_3)_2CCl_2 does not why? [OJEE 2004]

JEE Main Chemistry question

undergoes hydrolysis but does not why? [OJEE 2004]

(A)Low lying d-orbitals present in Si but not in CCorrect
(B)Only 3p orbital is involved in Si
(C)Silicon is more acidic
(D)Si–Cl bond is more polar than C–Cl bond

Answer: (A)

Solution

Silicon has accessible low-lying orbitals that allow water to attack through a pentacoordinate transition state, so hydrolyses readily; carbon has no valence -orbitals and cannot

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Question ID VK-138221