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Multiple Choice
How does increasing the temperature of water affect the amount of dissolved gases it can hold?
A
The amount of dissolved gases decreases as water temperature increases.
B
Dissolved gases are only affected by water pressure, not temperature.
C
The amount of dissolved gases increases as water temperature increases.
D
Water temperature has no effect on the amount of dissolved gases.
Verified step by step guidance
1
Understand the relationship between temperature and gas solubility: In general, the solubility of gases in liquids decreases as the temperature increases. This is because higher temperatures provide more kinetic energy to gas molecules, making it easier for them to escape from the liquid into the atmosphere.
Recall the principle of gas solubility: At lower temperatures, gas molecules have less kinetic energy, which allows them to remain dissolved in the liquid. Conversely, at higher temperatures, the increased kinetic energy overcomes the intermolecular forces keeping the gas dissolved.
Consider real-world examples: For instance, warm water in lakes or oceans tends to hold less oxygen compared to cold water, which can impact aquatic life. This is a practical demonstration of how temperature affects dissolved gases.
Eliminate incorrect options: Based on the scientific principle, the statement 'The amount of dissolved gases increases as water temperature increases' is incorrect. Similarly, 'Dissolved gases are only affected by water pressure, not temperature' and 'Water temperature has no effect on the amount of dissolved gases' are also incorrect.
Select the correct answer: The correct answer is 'The amount of dissolved gases decreases as water temperature increases,' as this aligns with the established relationship between temperature and gas solubility.