Question

The oxoacid of sulphur which contains two sulphur atoms in different oxidation states is:

A

pyrosulphurous acid

B

hyposulphurous acid

C

pyrosulphuric acid

D

persulphuric acid

Hard

Solution

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Correct option is A)

Disulphurous acid or pyrosulphurous acid is an oxoacid of sulphur with the formula . The salts of disulphurous acid are called disulphites or metabisulphites. The oxidation state of the sulfur atom bonded to 3 oxygen atoms is +5 while the oxidation number of other sulfur atom is +3.

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Solution To Question ID 476023
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