What change would increase the amount of gas able to be dissolved in a given amount of liquid water?
To determine the change that would increase the amount of gas able to be dissolved in a given amount of liquid water, we need to consider Henry's Law. According to Henry's Law, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid.
To increase the amount of gas that can be dissolved in water, we can make the following changes:
1. Increase the Partial Pressure of the Gas: By increasing the pressure of the gas above the liquid, we can increase the solubility of the gas. This can be achieved by increasing the amount of gas in a closed container or by increasing the overall pressure in a system.
2. Decrease the Temperature: Generally, decreasing the temperature of the liquid water will increase its ability to dissolve gases. This is because lower temperatures decrease the kinetic energy of water molecules, allowing them to more effectively engage in intermolecular forces with gas molecules and dissolve them.
3. Agitate or Stir the Water: Agitating or stirring the water increases the interaction between the gas and the liquid, allowing more gas molecules to come into contact with the water and dissolve. This is commonly seen when using a stirring rod or shaking a closed container.
It's important to note that different gases have different solubilities in water, so the effectiveness of each of these methods will depend on the specific gas you are working with.