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Question

Write a balanced chemical equation for each of the following :

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.

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Solution

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

CS2 (s) + 3O2(g) -------> 2SO2 (g)+ CO2(g)


2) cah2+h2o-------->ca(oh)2+2h2

3)

2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l)


4)The balanced equation is
2H2O2 → 2H2O + O2


5)

The reaction is:
2Al(OH)3 + 3H2SO4 →Al2(SO4)3 + 6H2O

6)Al2(SO4)3 + 6NaOH → 2Al(OH)3 + 3Na2SO4



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