Question

If saturated vapours are compressed slowly (temperature remaining constant) to half the initial volume, the vapour pressure will :

• A. Become four times
• B. Become doubled
• C. Remain unchanged
• D. Become half

Answer 1

Answer: (C)

Remain unchanged

If saturated vapours are compressed slowly (temperature remaining constant) to half the initial volume, the vapour pressure will remain unchanged as the vapour pressure cannot be increased due to saturation.