Question

Which of the following substance will not give carbon dioxide on treatment with dilute acid?

• A. Marble
• B. Limestone
• C. Baking soda
• D. Lime

Answer 1

The correct option is D

Lime

Explanation for correct option:

D. Lime

Reaction of metallic oxide with acid:

• When a metallic oxide reacts with dilute Hydrochloric acid, it produces salt and water.
• The general chemical reaction can be depicted as:

$\mathrm{Metallic}\mathrm{oxide}+\mathrm{acid}\to \mathrm{salt}+\mathrm{water}$

Reaction of Lime with dilute Hydrochloric acid:

• When Lime$\left(\mathrm{CaO}\right)$ reacts with dilute Hydrochloric acid$\left(\mathrm{HCl}\right)$, it produces Calcium chloride$\left({\mathrm{CaCl}}_2\right)$ and water$\left({\mathrm{H}}_2\mathrm{O}\right)$.
• The chemical reaction can be depicted as:

$\mathrm{CaO}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{CaCl}}_2\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Thus, in this reaction, no Carbon dioxide is produced as shown above.

Explanation for incorrect options:

Marble, limestone, and baking soda are all metal carbonates or bicarbonates, which yield carbon dioxide.

Reaction of Metal carbonates/bicarbonates with acid:

• When metal carbonate/bicarbonates react with acid, it produces metal salt along with the liberation of carbon dioxide$\left({\mathrm{CO}}_2\right)$.
• The general chemical reaction can be depicted as:

$\mathrm{Metal}\mathrm{carbonates}/\mathrm{bicarbonates}+\mathrm{Acid}\to \mathrm{Metal}\mathrm{salt}+\mathrm{Carbon}\mathrm{dioxide}$

Thus, options A, B, and C are incorrect. Hence, the correct option is D i.e. Lime.