1.

(a) Explain esterification reaction between acetic acid and ethyl alcohol as example.(b) Boiling point of alcohol is greater than the boiling point of hydrocarbons of coparable molar masses, Why?(c ) What is the effect of -NO_(2)group on the acidic strength of phenol?Give reason.

Answer»

Solution :(a) When acetic acid is HEATED with ethyl alcohol in the presence of conc.`H_(2)SO_(4)`, ethyl acetate is formed.
`CH_(3)COOH + C_(2)H_(5)OH OVERSET("conc. "H_(2)SO_(4))to CH_(3)COOC_(2)H_(5) + H_(2)O`
(b) Hydrogen bonding
(c ) Acidic strength of phenol increases. Because -`NO_(2)` is electron withdrawing group.


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