Which of these changes would NOT cause an increase in the pressure of a contained gas?Group of answer choicesThe volume of the container is increased.The temperature is increased.The average kinetic energy of the gas in increased.More of the gas is added to the container.
Question
Which of these changes would NOT cause an increase in the pressure of a contained gas?Group of answer choicesThe volume of the container is increased.The temperature is increased.The average kinetic energy of the gas in increased.More of the gas is added to the container.
Solution
The change that would NOT cause an increase in the pressure of a contained gas is when "The volume of the container is increased."
According to the Gas Laws, specifically Boyle's Law, the pressure of a gas is inversely proportional to its volume. This means that if the volume of the container is increased, the pressure of the gas would decrease, not increase.
On the other hand, increasing the temperature or the average kinetic energy of the gas, or adding more gas to the container, would indeed increase the pressure. This is because both temperature and kinetic energy are directly related to pressure (as per the Kinetic Molecular Theory and Gay-Lussac's Law), and adding more gas increases the number of molecules that can collide with the container, thus increasing pressure (as per Avogadro's Law).
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