H2s is passed through an aqueous solution containing cu2+ ,ca2+ ,hg2+ ,ba2+ ,al2+, mg2+, zn2+ ,ni2+, mn2+, co2+ and bi3+ in presence of dil.hci the number of ions which are precipitated as sulphide is
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cu+2.Hg+2.Bi+3
the above metal cations are precipitated as sulphide.
the above metal cations are precipitated as sulphide.
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