The chemistry teacher asked George to transfer an ideal gas from container A to container B. Container B is half the size of container A. If the temperature and moles of gas stay constant during transfer, the rate of collisions will _______________ and the pressure will _______________.

Responses
A stay the same; increasestay the same; increase
B increase; increaseincrease; increase
C increase; decreaseincrease; decrease
D decrease; decrease

D decrease; decrease

To determine the rate of collisions and the pressure during the transfer of an ideal gas from container A to container B, we should consider the relationship between these variables and the properties of an ideal gas.

The rate of collisions of gas molecules is directly proportional to the number of gas molecules and the volume of the container. Since the number of moles of gas remains constant during the transfer and container B is half the size of container A, the volume of container B is smaller. Therefore, the rate of collisions will increase during the transfer (option B).

The pressure of an ideal gas is determined by the force exerted by gas molecules colliding with the walls of the container. According to Boyle's Law, at constant temperature and moles of gas, the pressure is inversely proportional to the volume. As container B is half the size of container A (smaller volume), the pressure will increase during the transfer (option B).

Therefore, the correct answer is B: increase; increase.

The rate of collisions will stay the same and the pressure will increase.