According to the kinetic molecular theory, the pressure of a gas in a container will increase if the
Responses
A number of collisions with the container wall increases.number of collisions with the container wall increases.
B number of moles of the gas decreases.number of moles of the gas decreases.
C temperature of the gas decreasestemperature of the gas decreases
D volume of the container increases.
A number of collisions with the container wall increases.
According to the kinetic molecular theory, the pressure of a gas in a container is related to the number of collisions that gas molecules have with the walls of the container. The more collisions that occur, the higher the pressure.
So, to determine which response is correct, we need to consider the relationship between the number of collisions and each of the given factors.
A) If the number of collisions with the container wall increases, then the gas molecules are hitting the walls more frequently, resulting in an increased number of collisions and therefore an increased pressure. This matches the explanation from the kinetic molecular theory.
B) The number of moles of the gas refers to the amount of gas molecules present. If the number of moles decreases, it means there are fewer gas molecules in the container. With fewer molecules, there will be fewer collisions with the container walls, resulting in a decrease in pressure. This contradicts the explanation from the kinetic molecular theory.
C) If the temperature of the gas decreases, the average kinetic energy of the gas molecules decreases. This leads to slower movement of the molecules and fewer collisions with the container walls. So, a decrease in temperature would result in a decrease in pressure, which matches the explanation from the kinetic molecular theory.
D) If the volume of the container increases, the gas molecules have more space to move around. With more space, the number of collisions with the container walls per unit time decreases, resulting in a decrease in pressure. This contradicts the explanation from the kinetic molecular theory.
Based on the above analysis, the correct response is A) The number of collisions with the container wall increases.