Question

Which of the following mixture of gases does not obey Dalton's law of partial pressures?

• A. $O_2$ and $C{O}_2$
• B. $N_2$ and $O_2$
• C. $C{l}_2$ and $O_2$
• D. $N{H}_3$ and $HCl$

Answer 1

The correct option is D $N{H}_3$ and $HCl$

Dalton's law of partial pressures is applicable to non reacting gases. Here $N{H}_3$ and $HCl$ react to form $N{H}_{4}Cl$, whereas all others are non reacting gases.
$N{H}_3+HCl\to N{H}_{4}Cl$