Question

How does the solubility of gas change in a liquid, as described?

• A. Increases with decreasing pressure
• B. Increases with increasing temperature
• C. Decreases with increasing temperature
  
• D. Decreases with increasing pressure

Answer 1

The correct option is C Decreases with increasing temperature


In an equilibrium system of gas dissolved in solvent, when pressure over it is increased more and more gas particles are forced into a smaller volume. This also increases the rate at which they strike the surface of the solvent to enter it. Consequently, more gas dissolves with increasing pressure. In the case of increasing temperature, gas particles gain sufficient energy to escape the solvent and solubility decreases.