Question

Write the chemical names of the following compound:
${K_2}Mn{O_4}$

Answer 1

While the formation of potassium permanganate the potassium manganate is obtained.This green-colored salt is an intermediate in the industrial synthesis of potassium permanganate .

Complete step-by-step answer: The above given compound is none other than the potassium manganate. This potassium manganate is obtained during the preparation of potassium permanganate. So discussing the potassium permanganate we will discover that it is prepared by pyrolusite .Talking more on it we can say that pyrolusite is fused with alkali metal hydroxide in the presence of air as an oxidising agent. Then talking about the potassium manganate is of green colour which is disproportionate in a neutral or acidic solution to produce potassium permanganate. This potassium permanganate is generally stored in the dark coloured bottles in order to prevent it from decomposition in the presence of sunlight. Further talking about it we can say that in the laboratory a manganese ion salt is oxidised by peroxodisulphate to permanganate.

Note: Potassium permanganate is a powerful oxidising agent in neutral,alkaline or acidic solutions because it liberates nascent oxygen. Use of potassium permanganate is used as a disinfectant and for tanning the leather. Potassium manganate is used in water treatment also.