K_(3)SO_(3)+KMnO_(4)+H_(2)SO_(4)arrow K_(3)SO_(4)+MnSO_(4)+H_(2)O

This is a redox reaction. In this reaction, the manganese in KMnO4 is reduced from +7 to +2 in MnSO4, while the sulfur in K3SO3 is oxidized from +4 to +6 in K3SO4. The balanced chemical equation for this reaction is:<br /><br />3K3SO3 + 2KMnO4 + 3H2SO4 → 3K2SO4 + 2MnSO4 + 3H2O