Discuss the effect of pressure on solubility of gases in liquid? When we open the cap of a cola drink (or any carbonated beverage), why does gas bubbles come out? [3 MARKS]
Discuss the effect of pressure on solubility of gases in liquid? When we open the cap of a cola drink (or any carbonated beverage), why does gas bubbles come out? [3 MARKS]
Effect : 1 Mark
Reason : 2 Marks
Effect of pressure on solubility:
Solubility of gases increases with increase in pressure and solubility of gases decreases with decrease in pressure.
A cola (or carbonated) beverage is produced by dissolving carbon dioxide in the drink solution under pressure. An increase in pressure increases the solubility of gases. Therefore, more carbon dioxide dissolves at the higher pressure. When this pressure is suddenly released, e.g. by removing the cap of the bottle, the solubility of carbon dioxide decreases and it comes out in as bubbles from the solution.
Effect : 1 Mark
Reason : 2 Marks
Effect of pressure on solubility:
Solubility of gases increases with increase in pressure and solubility of gases decreases with decrease in pressure.
A cola (or carbonated) beverage is produced by dissolving carbon dioxide in the drink solution under pressure. An increase in pressure increases the solubility of gases. Therefore, more carbon dioxide dissolves at the higher pressure. When this pressure is suddenly released, e.g. by removing the cap of the bottle, the solubility of carbon dioxide decreases and it comes out in as bubbles from the solution.
