1.

Arrange NH_(4)^(+), H_(2)O, H_(3)O^(+), HF and OH^(-) in increasing order of acidic nature

Answer»

`H_(3)O^(+) lt NH_(4)^(+) lt HF lt OH^(-) lt H_(2)O`
`NH_(4)^(+) lt HF lt H_(3)O^(+) lt H_(2)O lt OH^(-)`
`OH^(-) lt H_(2)O lt NH_(4)^(+) lt HF lt H_(3)O^(+)`
`H_(3)O^(+) GT HF gt H_(2)O gt NH_(4)^(+) gt OH^(-)`

Solution :`H_(3)O^(+) gt HF gt NH_(4)^(+) + H_(2)O gt OH^(-)`.
Acidic nature in DECREASING order.


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