1.

Select the non-buffer solution-

Answer»

`0.8(M)H_2S+0.8(M)KHS`
`2(M)C_6H_5NH_2+2(M)C_6H_5N^(+)H_3barBr`
`3(M)H_2CO_3+2(M)KHCO_3`
`0.05(M)KClO_4+0.05(M)HClO_4`

Answer :A::B::C


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