When a salt is heated with dilute `H_(2)SO_(4)` and `KMnO_(4)` solution, the pink colour of `KMnO_(4)` is discharged, the salt is:

Question

When a salt is heated with dilute `H_(2)SO_(4)` and `KMnO_(4)` solution, the pink colour of `KMnO_(4)` is discharged, the salt is:

When a salt is heated with dilute `H_(2)SO_(4)` and `KMnO_(4)` solution, the pink colour of `KMnO_(4)` is discharged, the salt is:
A. a sulphite
B. a carbonate
C. a nitrate
D. a bicarbonate

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`SO_(3)^(2-)` reduces `KNnO_(4)` to colourless `Mn^(2+)`
`5SO_(3)^(2-) + 2MnO_(4)^(-) + 6H^(+) to 2Mn^(2+) +5SO_(4)^(2-) +3H_(2)O`

4 views Answered 2023-02-05 15:29