What is the effect on the equilibrium composition of the liquid when the partial pressure of CO2 gas above the liquid is decreased?

Consider the following gas-aqueous liquid equilibrium for a closed system at a constant temperature.
CO2 (g)⇌CO2(aq)
What is the effect on the equilibrium composition of the liquid when the partial pressure of CO2 gas above the liquid is decreased?

1 Answer
Jan 15, 2018

Well, what happens when you pop the cork of a bottle of sparkling wine?

Explanation:

Or what happens when you unscrew the cap of a bottle of sparkling water?

The gas dissolved in the solution LEAVES the solution as gas bubbles.

And you have described the same situation....

#CO_2(aq) rightleftharpoons CO_2(g)uarr#

In the CLOSED bottle of champagne or soft-drink, the equilibrium is maintained.....in the OPEN bottle....the proposed equilibrium is driven to the right.....and carbon dioxide gas comes out of solution.