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Which three variables are commonly involved in the study of gas laws in chemistry?
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7. Gases
Chemistry Gas Laws
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In an experiment where the pressure and temperature of a gas are increased while the volume remains constant, which variables are changing according to the gas laws?
A
Volume and temperature
B
Pressure and temperature
C
Volume only
D
Volume and pressure
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Recall the Ideal Gas Law, which relates pressure (P), volume (V), temperature (T), and amount of gas (n): \(P \times V = n \times R \times T\), where \(R\) is the gas constant.
In this problem, the volume (V) is held constant, so it does not change during the experiment.
Since the temperature (T) is increased, and volume is constant, the pressure (P) must also change to satisfy the equation.
Therefore, the variables that change are pressure (P) and temperature (T), while volume (V) remains constant.
This matches the gas law behavior where increasing temperature at constant volume causes an increase in pressure.
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