human
How does a change in pressure or volume affect a chemical equilibrium, particularly in systems containing gases?
gpt
For gases, equilibrium can shift in response to changes in pressure or volume; decreasing volume increases pressure, causing the system to shift to the side with the fewest moles of gas to reduce pressure.
Explanation: The equilibrium shift is driven by the system's tendency to reduce pressure, typically favoring the side of the reaction with fewer or more bonded moles of gas.