Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water?
A) increasing temperature
B) increasing pressure
C) decreasing surface area
D) decreasing temperature
It is NOT D) decreasing temperature. I just did my test and it was wrong.
The choices I got for this question were:
•decreasing temperature (which was wrong)
•decreasing pressure
•decreasing surface area
•decreasing solute concentration
By comparing the asker's choices and mine it leaves the choice decreasing surface area. Feel free to choose it.
To determine which of the given changes will decrease the total amount of gaseous solute that can be dissolved in a liter of liquid water, we need to consider the factors that affect solubility.
Solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent under specific conditions. The solubility of gases in liquids is influenced by temperature, pressure, and other factors.
Let's analyze each of the given options to see how they affect the solubility of gases in liquid water:
A) Increasing temperature:
When the temperature of a liquid is increased, the solubility of gases generally decreases. This is because as temperature rises, the kinetic energy of the solvent molecules also increases, causing them to move faster and create more space between each other. As a result, the solvent molecules are not as capable of holding onto the gas molecules, reducing the solubility.
B) Increasing pressure:
In the case of gases, increasing pressure usually increases their solubility in a liquid. This effect is known as Henry's law. When the pressure of a gas above the liquid increases, more gas molecules collide with the liquid's surface, allowing more of them to dissolve. Therefore, increasing pressure generally enhances the solubility of gases in a liquid, rather than decreasing it.
C) Decreasing surface area:
The surface area of a liquid does not directly affect the solubility of gases in that liquid. The surface area primarily influences the rate at which gas molecules can interact with the liquid, rather than the total amount of gas molecules that can dissolve.
D) Decreasing temperature:
As mentioned in option A, decreasing the temperature of a liquid generally decreases the solubility of gases. This is because cooling the liquid reduces the kinetic energy of the solvent molecules, which causes them to move closer together. As a result, the solvent molecules can hold onto the gas molecules more effectively, leading to higher solubility.
Based on this analysis, the correct answer is option D) decreasing temperature.
a is the correct choice.
consider c for one second: why are cokes bottles filled to the neck?