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  4. On passing H2S through acidified KMnO4 , we get

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Q. On passing $H_{2}S$ through acidified $KMnO_{4}$ , we get

NTA AbhyasNTA Abhyas 2020The d-and f-Block Elements

Solution:

On passing $H_{2}S$ through acidified $KMnO_{4}$ , we get Sulphur.

$2KMnO_{4}+3H_{2}SO_{4} \rightarrow K_{2}SO_{4}+2MnSO_{4}+3H_{2}O+5O$

$5H_{2}S+5O \rightarrow 5H_{2}O+5S$

$2KMnO_{4}+3H_{2}SO_{4}+5H_{2}S \rightarrow K_{2}SO_{4}+2MnSO_{4}+8H_{2}O+5S$