1.

The correct order of increasing [H_(3)O^(+)] in the following aqueous solutions is

Answer»

`0.01 M H_(2) S lt 0.01 M H_(2) SO_(4) lt 0.01 M NACL lt 0.01 M NaNO_(2)`
`0.01 M NaCllt 0.01 M NaNO_(2) lt 0.01 M H_(2)S lt 0.01 M H_(2)SO_(4)`
`0.01 M NaNO_(2) lt 0.01 M NaCl lt 0.01 M H_(2)S lt 0.01 M H_(2)SO_(4)`
`0.01 M H_(2) Slt 0.01 M NaNO_(2) lt 0.01 MNaCl lt 0.01 M H_(2) SO_(4)`.

SOLUTION :`H_(2)S` = weak acid, `H_(2)SO_(4)` =strong acid , NaCl= neutral, `NaNO_(2)` = basic. HENCE `[H_(3)O^(+)]` will be in the order : `NaNO_(2)ltNaClltH_(2)SltH_(2)SO_(4)`.


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