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Questions
What is the oxidation state of sulphur in the following?
Sulphurous acid
What is the oxidation state of S in the following oxoacid?
Sulphurous acid
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Solution
Sulphurous acid (H2SO3)
2 × (+1) + (Oxidation state of S) + 3 × (−2) = 0
2 + (Oxidation state of S) − 6 = 0
Hence, the oxidation state of ‘S’ in sulphurous acid (H2SO3) is +4.
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