Question

Which of the following gases can be separated completely from a mixture by using water as solvent.

• A. CO₂ and O₂
• B. N₂ and NH₃
• C. CO₂ and NH₃
• D. H₂ and N₂

Answer 1

The correct option is B

N₂ and NH₃

Explanation for correct option:

Option(b)

• ${\mathrm{N}}_2$ and ${\mathrm{NH}}_3$ can be separated from a mixture using water as a solvent.
• Because Ammonia (${\mathrm{NH}}_3$) is soluble in water(${\mathrm{H}}_2\mathrm{O}$) and nitrogen(${\mathrm{N}}_2$) is not soluble in water.
• When we dissolve the mixture of gases in water.
• Ammonia will dissolve in water and Nitrogen will remain in gaseous form.

Therefore, they can be separated easily.

Explanation for incorrect options:

Option(a)

${\mathrm{CO}}_2$ and ${\mathrm{O}}_2$

• ${\mathrm{O}}_2$(Oxygen) is partially soluble in water and ${\mathrm{CO}}_2$(Carbon dioxide) is soluble in water.

Therefore, they cant be separated using water as a solvent.

Option(c)

${\mathrm{CO}}_2$ and ${\mathrm{NH}}_3$

• Both are soluble in water.

Therefore, they can be separated using water as a solvent.

Option(d)

${\mathrm{H}}_2$ and ${\mathrm{N}}_2$

• Both are insoluble in water.

Therefore, they can be separated using water as a solvent.

Hence, The correct option is an option (b)