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According to the ideal gas law, what happens to the pressure of a gas inside a sealed container if the temperature of the gas decreases, assuming the volume and amount of gas remain constant?
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7. Gases
Chemistry Gas Laws
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Which statement best describes Charles's Law?
A
At constant volume, the pressure of a gas is directly proportional to its temperature in kelvins.
B
At constant pressure, the volume of a gas is directly proportional to its temperature in kelvins.
C
The total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas.
D
At constant temperature, the pressure of a gas is inversely proportional to its volume.
Guida verificata passo dopo passo1
Understand that Charles's Law describes the relationship between the volume and temperature of a gas when the pressure is held constant.
Recall the mathematical form of Charles's Law: \(V \propto T\) at constant pressure, which means volume is directly proportional to temperature measured in kelvins.
Express this relationship as an equation: \(\frac{V_1}{T_1} = \frac{V_2}{T_2}\), where \(V_1\) and \(V_2\) are volumes at temperatures \(T_1\) and \(T_2\) respectively.
Recognize that this law implies if the temperature of a gas increases, its volume increases proportionally, provided the pressure remains constant.
Compare this understanding with the given statements to identify that the correct description of Charles's Law is: 'At constant pressure, the volume of a gas is directly proportional to its temperature in kelvins.'
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