Chemical Engineering - Chemical Engineering Thermodynamics - Discussion

According to me, A is the correct answer.

For an ideal, the volume of a gas decreases with increased pressure according to Boyles's law.

But in phase equilibrium, for a solution of gas dissolving in liquid, gas cannot be condensable for pressure to turn into vapour. Once the vapour crosses the critical point of temperature it turns into gas and gas cannot revert to vapour then liquid.

Hence pressure has no role to play, so the increase or decrease of pressure remains unchanged. The Correct answer is C.

I think the answer should be (A) because we can easily observe this in case of soda drinks. Common examples of pressure effects on gas solubility can be demonstrated with carbonated beverages, such as a bottle of soda (above).

Once the pressure within the unopened bottle is released, CO2 (g) is released from the solution as bubbles or fizzing.

I also think option-A is the correct answer.