Gas in a steel container expands. However, the temperature is kept constant. What will happen to the pressure?
According to Gay-Lussac's law, when the temperature is kept constant, the pressure of a gas is directly proportional to its volume. Therefore, as the gas in the steel container expands, the volume increases, and so the pressure will decrease.
According to the ideal gas law, when the temperature of a gas is kept constant, the pressure and volume are inversely proportional. This is known as Boyle's Law.
If the gas in a steel container expands while the temperature is kept constant, the volume of the gas will increase. According to Boyle's Law, when the volume increases, the pressure of the gas decreases. Therefore, the pressure of the gas in the steel container will decrease as it expands.