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Question 66 of 66

Q.Convert the following:

(i) Ethanol into sodium ethoxide.
(ii) Phenol into o-phenol sulfonic acid.
(iii) Bromomethane into methoxyethane.
Maharashtra MsbshseMaharashtra HSC (MSBSHSE) Board 2026Subjective· 3mImportance★★★★★
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Three standard functional-group conversions: alcohol to alkoxide, phenol to sulfonic acid, and haloalkane to ether (Williamson synthesis).

  1. Ethanol into sodium ethoxide: Ethanol reacts with active metallic sodium, liberating hydrogen gas and forming sodium ethoxide. 2C2H5OH+2Na→2C2H5ONa+H2↑2C_2H_5OH + 2Na \rightarrow 2C_2H_5ONa + H_2\uparrow
  2. Phenol into o-phenol sulfonic acid: Phenol reacts with concentrated sulfuric acid in the cold to give predominantly the ortho isomer, o-hydroxybenzenesulfonic acid (o-phenolsulfonic acid). C6H5OH+H2SO4(conc., cold)→o-HO3S-C6H4-OH+H2OC_6H_5OH + H_2SO_4(conc.,\,cold) \rightarrow o\text{-}HO_3S\text{-}C_6H_4\text{-}OH + H_2O …

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