Final answer:
option c,To increase the concentration of dissolved oxygen in a solution, one should increase the pressure of the oxygen gas above the solution as gas solubility increases with pressure, following Henry's Law.
Step-by-step explanation:
To raise the concentration of dissolved oxygen gas in a solution, one could increase the pressure of the oxygen gas above the solution. According to Henry's Law, gas solubility increases as the partial pressure of a gas above the liquid increases. On the other hand, increasing the temperature would decrease the solubility of oxygen gas, as warmer waters hold less dissolved gas.
For example, when we open a carbonated beverage, such as a soda, we observe the carbon dioxide escaping in the form of bubbles. This is because the space above the liquid inside a bottle is initially at higher pressure. Once opened and the pressure released, the equilibrium is disrupted, causing the dissolved gas to come out of solution. Similarly, by increasing the pressure of oxygen gas above a solution, more oxygen molecules are in contact with the liquid, promoting higher dissolution rates and thus increasing the oxygen concentration within the solution.
In order to raise the concentration of oxygen gas in a solution, you would need to increase the pressure of the oxygen gas above the solution. According to Henry's Law, gas solubility increases as the partial pressure of a gas above the liquid increases. This means that when the pressure of the oxygen gas above the solution is increased, more oxygen molecules will come into contact with the solution and dissolve into it, resulting in a higher concentration of oxygen gas in the solution.