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Give the decreasing order of acidic stre...

Give the decreasing order of acidic strength of the following :
(a) `CH_4`
(b) `H_2 O`
( c) `HF`
(d) `NH_3`
( e) `LiH`
(f) `BeH_2`.

Text Solution

Verified by Experts

The conjugate bases are `overset(ɵ)(CH_(3)), overset(ɵ)(NH_(2)), overset(ɵ)(OH)` and `F^(ɵ)`

`overset("Increasing volume available to electron") rarr`
`overset("Decreasing electron density") rarr`
`overset("Decreasing electron donating tendency") rarr`
`overset("Decreasing basicity of conjugate bases")rarr`
`overset("Increasing acidity of corresponding acids")rarr`
`:. HF gt H_(2)O gt NH_(3) gt CH_(4)`
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