Arrange the following compounds in increasing order of their property as indicated.
(i) $C H_{3} C O C H_{3}, C_{6} H_{5} C O C H_{3}, C H_{3} C H O$ (reactivity towards nucleophilic addition reaction)
(ii) $C I - C H_{2} - C O O H, F - C H_{2} - C O O H, C H_{3} - C O O H$ (acidic character).

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Solution

(i) Nucleophiles are negatively entity positivity of carbon is carbonyl group facilitates nucleophilic addition. Thus, positivity of carbon in carbonyl carbon is so much decrease than $(I)$ and $(I I)$ . Thus, nucleophilic addition order $I I I > I > I I$ .

(ii) The stability order $I I > I > I I I$ , due to $+ I$ effect of $C H_{3}$ group electron density of oxygen is more. But in (I) and (II), $- I$ effect of $F$ is more than $C l$ . Thus, II is more stabilized than I. Thus, acidity order is $I I > I > I I I$ .

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