Aluminium reacts with sulphuric acid to form Aluminium sulphate. Answer the following:
What is the charge carried by sulphate ion?

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Solution

Alumunium reacts with sulphuric acid to form Aluminium sulphate.
$A l + H_{2} S O_{4} ⟶ A l_{2} (S O_{4})_{3}$
Here, the charge carried by aluminium is three as $A l^{3 +}$ and the charge carried by sulphate ion is two as $S O_{4}^{2 -}$ . Charge carried by sulpate ion is $- 2$ .

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1. Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.

2. Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas.

3. Methyl alcohol burns in air to form carbon dioxide and water.

4. Liquid hydrogen peroxide decomposes to give water and oxygen gas.

5. Aluminium hydroxide reacts with sulphuric acid to give ammonium sulphate and water.

6. Aluminium sulphate solution reacts with sodium hydroxide to form a precipitate of aluminium hydroxide.

A colourless gas X reacts with sulphuric acid to form ammonium sulphate. What is X?

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