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Which of the following on treatment with aqueus sodium hydroxide will give corresponding alcohol and acid?A. `C_(6)H_(5)CH_(2)CHO`B. `C_(6)H_(5)CHO`C. `CH_(3)CH_(2)CH_(2)CHO`D. `CH-overset(O)overset(|)(C)-CH_(3)` |
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Answer» Correct Answer - B Aldehydes which do not have any `alpha`-hydrogen atom when heated with a concentrated solution of NaOH undergo a simultaneous oxidation and reduction (disproportionation) forming a salt of carboxylic acid and alcohol. This reactio is called cannizaro reaction `2C_(6)H_(5)CHO+naOHtounderset("Benzyl alcohol")(C_(6)H_(5)CH_(2)OH)+underset("Sodium benzoate")(C_(6)H_(5)CO overset(-)(O)overset(+)(Na)` |
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