4RhCl3 + 3(N2H4•H2O) + 12(NH3•H2O) → 4Rh + 3N2 + 12NH4Cl + 15H2O
Rhodium(III) chloride react with hydrazine hydrate and ammonium hydroxide to produce rhodium, nitrogen, ammonium chloride and water. As a result, reaction is produced colloidal solution rhodium.