Preparation of potassium permanganate from Mn | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The preparation of potassium permanganate $(KMnO_4)$ from pyrolusite ore $(MnO_2)$ occurs in two steps.In the $1^{st}$ step,$MnO_2$ is fused with

Vedclass · Accepted Answer

$K_2MnO_4$

Vedclass · Answer

(D) The preparation of potassium permanganate $(KMnO_4)$ from pyrolusite ore $(MnO_2)$ occurs in two steps.In the $1^{st}$ step,$MnO_2$ is fused with potassium hydroxide $(KOH)$ in the presence of an oxidizing agent like potassium nitrate $(KNO_3)$ or air to form potassium manganate $(K_2MnO_4)$.The reaction is: $2MnO_2 + 4KOH + O_2 \rightarrow 2K_2MnO_4 + 2H_2O$ or $MnO_2 + 2KOH + KNO_3 \rightarrow K_2MnO_4 + KNO_2 + H_2O$.Thus,the product of the $1^{st}$ step is $K_2MnO_4$.

Preparation of potassium permanganate from $MnO_2$ involves a two-step process in which the $1^{st}$ step is a reaction with $KOH$ and $KNO_3$ to produce:

Similar Questions

What are the impurities present in ruby and sapphire?

$K_2Cr_2O_7 \xrightarrow{\Delta} A + B + C$
If $B$ is a green-colored compound,then it would be:

$FeSO_4 \cdot 7H_2O$ (Green Vitriol) salt on thermal decomposition does not produce

Which of the following are used as catalysts in petroleum cracking?

Which of the following exhibits the maximum oxidation state of vanadium?

Vedclass Test Series

Exam Paper Generator

Online Exam Module