Potassium manganate (K_2MnO_4) is not formed | vedclass

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(D) $1.$ Thermal decomposition of $KMnO_4$: $2 KMnO_4 \xrightarrow{\Delta } K_2MnO_4 + MnO_2 + O_2$. Here,$K_2MnO_4$ is formed.$2.$ Reaction of $KMnO_

Vedclass · Accepted Answer

$KMnO_4 + H_2SO_4 	ext{ (conc.)} \xrightarrow{\Delta }$

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(D) $1.$ Thermal decomposition of $KMnO_4$: $2 KMnO_4 \xrightarrow{\Delta } K_2MnO_4 + MnO_2 + O_2$. Here,$K_2MnO_4$ is formed.$2.$ Reaction of $KMnO_4$ with concentrated $KOH$: $4 KMnO_4 + 4 KOH \xrightarrow{\Delta } 4 K_2MnO_4 + O_2 + 2 H_2O$. Here,$K_2MnO_4$ is formed.$3.$ Fusion of $MnO_2$ with $KOH$ in the presence of air: $2 MnO_2 + 4 KOH + O_2 \xrightarrow{\Delta } 2 K_2MnO_4 + 2 H_2O$. Here,$K_2MnO_4$ is formed.$4.$ Reaction of $KMnO_4$ with concentrated $H_2SO_4$: $KMnO_4 + H_2SO_4 	ext{ (conc.)} \xrightarrow{\Delta } K_2SO_4 + Mn_2O_7 + H_2O$. In this reaction,manganese heptoxide $(Mn_2O_7)$ is formed,not potassium manganate $(K_2MnO_4)$.

Potassium manganate $(K_2MnO_4)$ is not formed in which of the following reactions?

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