NaCl + AgNO3 = NaNO3 + AgCl
AlCl3 + 3NaOH = Al(OH)3 + 3NaCl
3CaCl2 + 2H3PO4 = Ca3(PO4)2 + 6HCl
NaOH + HCl = NaCl + H2O
2NaOH + CO2 = Na2CO3 + H2O
2NaOH + CaCl2 = Ca(OH)2 + 2NaCl