Ch 13 Kinetic Theory

Use the graph to answer Questions 1 and 2.



(1)What is the normal boiling point of ethanol?Hint

(2)Can chloroform be heated to 90°C in an open container?Hint

(3)Which sequence has the states of CH3OH correctly ordered in terms of increasing average kinetic energy?Hint

1. CH3OH(s), CH3OH(g), CH3OH(l)
2. CH3OH(g), CH3OH(l), CH3OH(s)
3. CH3OH(l), CH3OH(g), CH3OH(s)
4. CH3OH(s), CH3OH(l), CH3OH(g)

Use the drawing to answer Questions 4–6. The same liquid is in each flask.

(4)In which flask is the vapor pressure lower? Give a reason for your answer.Hint

(5)In which flask is the liquid at the higher temperature? Explain your answer.Hint

(6)How can the vapor pressure in each flask be determined?Hint

For each question there are two statements. Decide whether each statement is true or false. Then decide whether Statement II is a correct explanation for Statement I.

(7)In an open container, the rate of evaporation of a liquid always equals the rate of condensation.

BECAUSE

A dynamic equilibrium exists between the liquid and its vapor in an open container. Hint

(8)Water boils at a temperature below 100°C on top of a mountain.

BECAUSE

Atmospheric pressure decreases with an increase in altitude. Hint

(9)The temperature of a substance always increases as heat is added to the substance.

BECAUSE

The average kinetic energy of the particles in a substance increase with an increase in temperature.Hint

(10)Solids have a fixed volume.

BECAUSE

Particles in a solid cannot move.Hint

(11)Gases are more compressible than liquids.

BECAUSE

There is more space between particles in a gas than between particles in a liquid.Hint