How do you acidify potassium manganate?

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Solution

In titration reactions diluted sulphuric acid is used.
Nitric acid is not used as an oxidising agent as hydrochloric acid reacts with ${KMnO}_{4}$ and forms chlorine.
Chlorine is also an aqueous solution as well as oxidising agent.
Potassium permanganate $({KMnO}_{4})$ is a permanganic acid salt $({HMnO}_{4})$ and manganate is a manganic acid salt $(K_{2} {MnO}_{4}) (H_{2} {MnO}_{4})$ .
Oxidation state of manganese is VI in the manganate salt and VII in the permanganate.

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