Question

Dalton's law of partial pressures is not applicable to which one of the following?

• A. $H_2+C{l}_2$
• B. $S{O}_2+C{l}_2$
• C. $N{H}_3+HCl$
• D. All the above

Answer 1

The correct option is D All the above

According to Dalton's law of partial pressures, for a mixture of $\text{non-reacting}$ gases, the total pressure is equal to the sum of the partial pressures of the individual gases.

This law is not applicable to the mixtures $H_2+C{l}_2,N{H}_3+HCl$ and $S{O}_2+C{l}_2$ as they react with each other.

For example, hydrogen and chlorine react to form hydrogen chloride, ammonia and hydrochloric acid forms ammonium chloride while sulphur dioxide reacts with chlorine to form $S{O}_{2}C{l}_2$.

Hence, the correct answer is option $\text{D}$.