Which of the given sulphur compounds was obtained by the dry distillation of CuSO₄.5H₂O?

SO₂

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SO₃

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SO₄

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S₂O₄

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Solution

The correct option is B SO₃
In the 18th century, Ibn Zakariya al Razi isolated sulphuric acid by the dry distillation of CuSO₄.5H₂O and FeSO₄.7H₂O. Oxidation of these salts, i.e., copper sulphate and iron sulphate produces sulphur trioxide (SO₃)and oxides of copper and iron respectively.

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Which of these sulphur compound was obtained by the dry distillation of CuSO₄.5H₂O?

S A \to S O_{2} B \to S O_{3} C \to H_{2} S O_{4}

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