Final answer:
The effect of pressure and temperature changes on the volume of 1 mol of an ideal gas is explained using the ideal gas law and the combined gas law.
Step-by-step explanation:
According to the ideal gas law, the volume of 1 mol of an ideal gas is determined by the pressure, temperature, and amount of the gas. Let's analyze the effect of each scenario on the volume of 1 mol of an ideal gas:
A. When the pressure is reduced by a factor of 4 at constant temperature, the volume of the gas will increase. This is because the volume of an ideal gas is inversely proportional to its pressure.
B. In this scenario, both the pressure and temperature change. To determine the effect on volume, we need to use the combined gas law. Since the pressure is higher and the temperature is lower in the final state, the volume will decrease.
C. The change in temperature from 305 K to 32 °C does not have a significant effect on the volume. However, when the pressure changes from 2 atm to 101 kPa, the volume will decrease as the pressure decreases.