Final answer:
Pressure has little effect on the solubility of solids and liquids, but increases the solubility of gases in a liquid as described by Henry's Law.
Step-by-step explanation:
The solubility of solids and liquids is not significantly affected by changes in pressure, but the solubility of gases is strongly influenced. According to Henry's Law, the solubility of a gas in a liquid increases as the partial pressure of the gas above the liquid increases. For instance, in carbonated beverages, high pressure is used to dissolve more CO₂; when opened, the pressure above the liquid drops, causing the gas to escape and turning the drink flat as it loses carbonation over time.