Name the oxide of sulphur which reacts with water to give sulphuric acid.

Q. (a) Name the oxide of sulphur which reacts with water to give sulphuric acid.
(b) In the Contact Process, the direct reaction between the oxide of sulphur an water is avoided. In this process; what does the oxide of sulphur react with instead of water and what is the name of the product?
(c) Give the name and formula of the acidic salt which can give sodium ions and sulphate ions in solution.
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Q.

Name the oxide of sulphur which reacts with water to give sulphuric acid.
In the contact process, the direct reaction between oxide of sulphur and water is avoided. In this process, what does the oxide of sulphur react with instead of water, and what is the name of the product?

Q. Sulphuric acid is manufactured by the Contact process.
(a) Give two balanced equations to obtain $S{O}_2$ in this process.
(b) Give the conditions for the oxidation of $S{O}_2$.
(c) Why is $H_{2}S{O}_4$ not obtained by directly reacting $S{O}_3$ with water?
(d) Name the chemical used to dissolve $S{O}_3$ and name also the product formed.
(e) Give all the main reactions to this process.
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Q. Sulphur reacts with water directly to give sulphuric acid.