A salt A salt + water A salt + hydrogen Hydrogen only
Potassium sulphide + water Potassium sulphide only Potassium sulphide + hydrogen Potassium sulphate + water
HCl + NaOH > NaCl + H20 2HCl + NaOH > NaCl + 2H20 2HCl + NaOH > 2NaCl + H20 2HCl + 2NaOH > 2NaCl + H20
Calcium sulphate + water Calcium sulphate + carbon dioxide Calcium sulphate + water + carbon dioxide Water + carbon dioxide
Sodium chloride and a precipitate of calcium carbonate Calium chloride and a precipitate of calcium carbonate Sodium chloride and a precipitate of sodium carbonate No precipitate
Ca2+(aq) + CO32-(aq) > CaCO3(aq) Ca2+(s) + CO32-(s) > 2CaCO3(aq) 2Ca2+(s) + 2CO32-(s) > CaCO3(s) Ca2+(aq) + CO32-(aq) > CaCO3(s)
Li + Cl > LiCl Li + Cl2 > LiCl Li + Cl2 > 2LiCl 2Li + Cl2 > 2LiCl