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Carbon Dioxide Preparation

Which of the ...

Question

Which of the following is a method of preparation of $C O_{2}$ ?

A

By complete combustion of carbon

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B

By action of dilute mineral acids on carbonates.

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C

As a by-product from the manufacture of Hydrogen for making ammonia.

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D

None of these

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Solution

The correct options are
A
By complete combustion of carbon

B
By action of dilute mineral acids on carbonates.

C
As a by-product from the manufacture of Hydrogen for making ammonia.

D
None of these

Methods of preparation of $C O_{2}$

1. By combustion of carbon

$C (s) + O_{2} (g) \to C O_{2} (g)$

$C H_{4} (g) + 2 O_{2} (g) \to C O_{2} (g) + 2 H_{2} O (g)$

2. In laboratory, CO $_{2}$ is prepared by the action of dilute mineral acids on metallic carbonates and bicarbonates.

$C a C O_{3} (s) + 2 H C l (a q) \to C a C l_{2} (a q) + C O_{2} (g) + H_{2} O (l)$

3. By heating metallic carbonates and bicarbonates

NaHCO $_{3}$ (s) $\to$ Na $_{2}$ CO $_{3}$ (s)+ H $_{2}$ O (g)+ CO $_{2}$ (g)

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