Decide which of the following statements are true and which are false. 1. As tem

Question

Decide which of the following statements are true and which are false.

1. As temperature decreases, the average kinetic energy of a sample of gas molecules decreases.

2. At constant temperature, the lighter the gas molecules, the smaller the average kinetic energy.

3. At constant temperature, the heavier the gas molecules, the smaller the average velocity.

4. In order for two separate 1.0 L samples of O2(g) and H2(g) to have the same average velocity, the H2(g) sample must be at a higher temperature than the O2(g) sample.

5. Real gas molecules behave most ideally at low temperature and high pressure.

6. Real gas molecules have a volume and exert attractive forces on one another.

Explanation / Answer

1. As temperature decreases, the average kinetic energy of a sample of gas molecules decreases.= TRUE

2. At constant temperature, the lighter the gas molecules, the smaller the average kinetic energy.= FALSE

3. At constant temperature, the heavier the gas molecules, the smaller the average velocity.= FALSE

4. In order for two separate 1.0 L samples of O2(g) and H2(g) to have the same average velocity, the H2(g) sample must be at a higher temperature than the O2(g) sample.=FALSE

5. Real gas molecules behave most ideally at low temperature and high pressure = FALSE

mostly at high temperaure and low pressure

6. Real gas molecules have a volume and exert attractive forces on one another. = TRUE

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