1.

The acidic strength of active methylene group in I. `CH_(3)COCH_(2)COOH_(2)H_(5)` II.`CH_(3)COCH_(2)COOH_(3)` III. `C_(2)H_(5)OOC CH_(2)COOC_(2)H_(5)`A. `I gt III gt II`B. `I gt II gt III`C. `II gt I gt III`D. `III gt I gt II`

Answer» Correct Answer - C
Acidic strength in active methylene compounds can be decided by two factors
(i) Presence of electron withdrawing group.
(ii) Stability of enolate anion obtained after removal of `H^(+)`
Hence, `II gt I gt III`


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