Notes 1

Question 1

What is an extensive property?

Answer 1

A property that is proportional to the amount of material

Question 2

Give two examples of extensive properties.

Answer 2

Mass and volume.

Question 3

Which variables does an equation of state relate?

Answer 3

P,V,T, and n

Question 4

What is an intensive property?

Answer 4

A property which depends on the nature of the material but not on the amount of the material

Question 5

Give two examples of intensive properties.

Answer 5

Temperature and pressure

Question 6

What is the definition of pressure? (Equation)

Answer 6

P = (F/A)
F is force
A is area

Question 7

What is the ideal gas law? (Equation)

Answer 7

PV=nRT

Question 8

What is the important thing to remember about ideal gases?

Answer 8

They do not have intermolecular interactions

Question 9

What is the definition of energy? (Words)

Answer 9

The capacity to do work

Question 10

What is the definition of potential energy? (Words)

Answer 10

Energy due to position

Question 11

When molecules in a real gas are close together what interaction dominates?

Answer 11

Attractive interactions

Question 12

When molecules are close together, what interaction dominates?

Answer 12

Repulsive interactions dominate

Question 13

What is the Boyle temperature? (Words)

Answer 13

What is the temperature at which B(T) is zero (B(T) is from the virial equation)

Question 14

What is Z?

Answer 14

The compression factor

Question 15

What is the definition of Z? (Equation)

Answer 15

Z= (V/Videal) = (PVm/RT)

Question 16

What is the critical pressure?

Answer 16

The temperature above which vapour cannot be liquified, no matter how much pressure is applied

Question 17

What is the critical pressure?

Answer 17

The pressure required to liquify a gas at its critical temperature

Question 18

What is the critical density?

Answer 18

The density of a pure substance at its critical point