Which is the strongest conjugate base? The options are, (CH3)3CO , (CH3)2CHO , CH3CH2O, CH3O
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Solution
If acid is strong than it's conjugate base will be weak
Here if after removing H+ from the compound if final ion is stable than conjugate base will be weak.
Here when we remove H+ the least stable anion will be (CH3)3CO bcause three CH3 ion will increase more negative charge density on the centre carbon since (CH3)3CO is least stable and CH3O will be most stable so (CH3)3CO will be the strongest conjugate base .