NaHS + HCl ->NaCl +H2S↑
K2HPO4+KOH -> K3PO4 + H2O
Ca(H2PO4)2+K2CO3-> CaCO3↓ +2KH2PO4
Ba(HCO3)2 + K2SO4 -> BaSO4↓ + 2KHCO3
Ca(HSO3)2 +2HNO3 -> Ca(NO3)2 +2SO2↑ +2H2O
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NaHS + HCl ->NaCl +H2S↑
K2HPO4+KOH -> K3PO4 + H2O
Ca(H2PO4)2+K2CO3-> CaCO3↓ +2KH2PO4
Ba(HCO3)2 + K2SO4 -> BaSO4↓ + 2KHCO3
Ca(HSO3)2 +2HNO3 -> Ca(NO3)2 +2SO2↑ +2H2O