Which of the following compounds gives trichloromethane on distilling – InterviewSolution

1.	Which of the following compounds gives trichloromethane on distilling with bleaching powder?
Answer» A) methanal B) phenol C) ethanol D) methanol Solution : (i) ALCOHOL is first oxidised to acetaldehyde by chlorine, `[CI_(2)+H_(2)Oto 2HCI +O]` `CH_(3)CH_(2)OH+O to CH_(3)CHO+H_(2)O` (II) Acetaldehyde then reacts with chlorine to form chloral `CH_(3)CHO+3Cloverset("chlorination")toCCI_(3)CHO+3HCI` (iii)Chloral, thus FORMED, is hydrolysed by calcium hydroxide. `CCI_(3)CHO+CA(OH)_(2)to2CHCl_(3)+(HCOO)_(2)Ca`.

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