Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is

Calcium oxide

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Distilled water

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Potassium hydroxide solution

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Sodium carbonate.

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Solution

The correct option is C Potassium hydroxide solution

Like other alkali metals, potassium hydroxide combines with $C O_{2}$ as such:-
$2 K O H + C O_{2} \to K_{2} C O_{3} + H_{2} O$

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Similar questions

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.

Balance the following chemical equation

Calcium hydroxide + carbon dioxide -calcium carbonate + water

+

\to

+

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