The function of ammonium hydroxide during testing of IVA group is
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a
To increase ammonium ions
b
To increase metal ions in IV A group
c
To increase sulphide ions
d
To increase H+ ions
answer is C.
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Detailed Solution
âââââââââH2Sâ2H++S2âNH4OHâNH4++OHâThen OH- ions reacts with H+ form as water, then according Lechatelierâs principle forward reaction takes place then S2- ions are increased. So ionic product of IVA group ions exceeds solubility product.