Potassium manganate `(K_2MnO_4)` is formed when

Potassium manganate (K_2 MnO_4) is formed when

Potassium manganate (K_(2)MnO_(4)) is formed when:

In the preparation of KMnO_4 , Pyrolusite (MnO_2) is first converted to potassium manganate (K_2MnO_4) . In this conversion the oxidation state of manganese changes from

In the preparation of KMnO_(4) pyrolusite (MnO_(2)) is first converted to potassium manganate (K_(2)MnO_(4)) . In this conversion, the oxidation state off manganese changes from