2) K2CO3 + BaCl2 → 2 KCl + BaCO3
Ca(OH)2 + 2NH4Cl → CaCl2 + 2(NH3•H2O)
HNO3 + CH3COONa = NaNO3 + CH3COOH
5 H2SO4 + 8 KI → 4 H2O + 4 K2SO4 + 4 I2 + H2S
3) Ba(OH)2 + H2SO4 → BaSO4 + 2H2O
2) K2CO3 + BaCl2 → 2 KCl + BaCO3
Ca(OH)2 + 2NH4Cl → CaCl2 + 2(NH3•H2O)
HNO3 + CH3COONa = NaNO3 + CH3COOH
5 H2SO4 + 8 KI → 4 H2O + 4 K2SO4 + 4 I2 + H2S
3) Ba(OH)2 + H2SO4 → BaSO4 + 2H2O