What is the Difference Between Potassium Permanganate and Potassium Manganate?

The main difference between potassium permanganate and potassium manganate lies in their oxidation states and chemical structures. Here are the key differences:

1. Oxidation State: Potassium manganate has a -2 oxidation state, while potassium permanganate has a +7 oxidation state. This means that potassium permanganate is a stronger oxidizing agent compared to potassium manganate.
2. Chemical Formula: Potassium manganate has the chemical formula K2MnO4, while potassium permanganate has the chemical formula KMnO4.
3. Crystal Structure: Potassium permanganate is an orthorhombic crystal, while potassium manganate is isomorphous with sodium chloride.
4. Appearance and Color: Potassium permanganate appears as purple-bronze needle-shaped crystals, while potassium manganate is an inorganic compound in the form of green crystals.
5. Synthesis: Potassium permanganate is formed from manganese dioxide, whereas potassium manganate is produced through the treatment of MnO2 with air.

Comparative Table: Potassium Permanganate vs Potassium Manganate

Potassium permanganate and potassium manganate are two different inorganic compounds with distinct properties and uses. Here is a table comparing their key differences:

Potassium permanganate has a dark purple color and is a strong oxidizing agent, while potassium manganate appears as green crystals and is used in specialized and limited applications compared to potassium permanganate.