Question

Partial pressure of a vessel containing Cl₂ , CO₂ and CO is the sum of the partial pressures of Cl₂ , O₂ and CO. 

1. If so, is it correct to say partial pressure of a vessel containing NH₃ and HCl gases is the sum of their partial pressures? Justify. 

2. Which law helped you to answer this? 

3. State the law.

Answer 1

1. No. NH₃ reacts with HCl to form NH₄CI. Since they are not non-interacting gases, their sum of partial pressures may not be equal to the total pressure.

2. Dalton’s law of partial pressures.

3. It states that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases.