1. Which of the following statements is true for ideal gases, but is not always
ID: 840165 • Letter: 1
Question
1. Which of the following statements is true for ideal gases, but is not always true for real gases?
Choose all that apply.
A. Replacing one gas by another under the same conditions, has no effect on pressure.
B.There are no attractive forces between molecules.
C. Pressure is caused by molecule-wall collisions.
D. Average molecular kinetic energy increases with temperature.
2.Which of the following statements is true for real gases?
Choose all that apply.
A. As molecules increase in size, deviations from ideal behavior become more apparent at relatively high pressures.
B. The volume occupied by the molecules can cause a decrease in pressure compared to the ideal gas.
C. The volume occupied by the molecules can cause an increase in pressure compared to the ideal gas.
D. As molecules increase in size, deviations from ideal behavior become more apparent at relatively low pressures.
Explanation / Answer
1>
A. Replacing one gas by another under the same conditions, has no effect on pressure.
B.There are no attractive forces between molecules.
2>
A. As molecules increase in size, deviations from ideal behavior become more apparent at relatively high pressures.
C. The volume occupied by the molecules can cause an increase in pressure compared to the ideal gas.
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