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Arrange in the order of increasing acidi...

Arrange in the order of increasing acidic strengths.

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`(X)gt(Z)gt(Y)`
Carboxylic acids are stronger acids than `(-overset(+)NH_(3))`. Group. Hence `(X)` is the strongest acids.
Due to `-I` effect of `(-COOH),(Z)` is more acidic than `(Y)`. Its `-I` effect is short distance operating from the source, so stronger is the acid. since `(Z)` is nearer to `(-COOH)` group, `(Z)` is more acidic than `(Y)`. Hence the order is as given above.
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