What can be measured by titration?

• The concentration of an unknown substance e.g. 0.900 mol L⁻¹.
• Percentage purity, e.g. 56%.
• Water of crystallization, e.g. (NH₄)₂SO₄.nH₂O.
• Percentage of a metal in a salt, e.g. 12% Fe in a salt.
• Water hardness, e.g. determination of the concentration of calcium and magnesium ions.