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REPORT SHEET EXPERIMENT Abbreviated 32 Qualitative Analysis Scheme PART IV: GROUP 4 CATIONS equations for each precipitation
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Answer #1

Grop 4 stabel cations are Ca+2, Sr+2, Ba+2

Ca + 2HCl---CaCl2

Sr + 2 HCl ---SrCl2,

Ba + 2HCl----BaCl2

REacted with NH4S to produce corrdsponding Disulphides M2S, but the above reaction is very slow compare to the other classified grop cation metals, these may react very slowly, difficult to get the precipitate

Ca +NH4S---Ca2S + NH3

Reacted with Cardonated NH4CO3 precipitate very quickly

CaCO3, SrO3, BaCO3 to give the quick precipoitates

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