1.

The acid strength of active methylene group in : (i) CH_(3)COCH_(2)COOC_(2)H_(5) (ii)CH_(3)COCH_(2)COCH_(3)(iii) C_(2)H_(5)OOCCH_(2)COOC_(2)H_(5) decreases as :

Answer»

(i) `GT` iii `gt` II
I `gt` (ii) `gt` iii
iii `gt` I `gt` ii.
`iiigtigtii`.

Solution :In (ii) , `-CH_(2)-` group is ATTACHED to two electron withdrawing groups . Therefreit is most acidic.Acetate group `(CH_(3)COO^(-))` is less electron withdrawing than aceiyl group `(CH_(3)CO^(-))`.


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