10RbCl + 2KMnO4 + 8H2SO4 2MnSO4 + 5Cl2 + 5Rb2SO4 + K2SO4 + 8H2O
Rubidium chloride react with potassium permanganate and sulfuric acid to produce manganese(II) sulfate, chlorine, rubidium sulfate, potassium sulfate and water. Sulfuric acid - concentrated, heated solution.