If both concentrated and dilute sulphuric acid on Thermal decomposition produces nascent oxygen, then why does not both act as oxidising agent?

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Solution

Dear student,

Decomposition of sulphuric acid-
H₂SO₄ →→ H₂O + SO₂ + [O]

The liberation of nascent oxygen [O] give rise to oxidising property of sulphuric acid. This nascent oxygen brings about a number of oxidation reaction. Both metals and non-metals are oxidised by concentrated sulphuric acid which is reduced to sulphur dioxide.
Dilute sulphuric acid does not produce nascent oxygen

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Describe the reactions that show
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(iii) Concentrated sulphuric acid is an oxidising agent.
(iv) Dilute sulphuric acid behaves as dibasic acid.

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can act as both an oxidising agent and a reducing agent under both basic and acidic conditions.

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