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09-11-2021
Chemistry

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When hydrogen sulphide is burnt in oxygen to form sulphur(is) oxide and what. How does the oxidation number of sulphur change?

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09-11-2021

Answer:

Explanation:

Hydrogen sulphide burns in air to form sulphur dioxide: 2H2S + 3O2 → 2H2O + 3SO2. In this reaction, the sulphur is oxidized from -2 to +4. In the reaction H2S + 2O2 → H2SO4 + 790 kJ/mol, the oxidation is from -2 to +6.

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