Unit 10 - Gases and Kinetic Molecular Theory

Question 1

Pressure (P)

Answer 1

F/A

Question 2

What can be said about pressure if gas particles are moving fatser

Answer 2

Pressure is higher

Question 3

Temperature is

Answer 3

average energy of the particles in a system

Question 4

What is the idea gas equation

Answer 4

P = RTn/V

P = pressure 
R = constant 
T = absolute temperature (K)
V = volume 
n = number of moles

Question 5

1 mol of gas at 1atm and at 0 deg will occupy …

Answer 5

22.4 L

Question 6

0 deg –> K

Answer 6

273K

Question 7

25 deg –>

Answer 7

298K

Question 8

1L is –>

Answer 8

1 dm3

Question 9

Pv =

Answer 9

nRT

Question 10

What does the ideal gas eqn assume

Answer 10

Molecules don’t interact or repel each other and that the molecules have inconsequential volumes

Question 11

R =

Answer 11

0.082 L atm mol-1 K-1

Question 12

1 atm —> Kpa

Answer 12

101 Kpa

Question 13

22.4 L –> m3

Answer 13

0.024

Question 14

What is dalton’s Law

Answer 14

Partial pressures all sum to give the total pressure

Question 15

What is vapour pressure

Answer 15

Partial pressure where the gaseous and liquid states are at eqbm

Question 16

1 atm –> mmHg

Answer 16

760

Question 17

What is RAOULtS LAW

Answer 17

States that the partial pressure of each componene t of an ideal mixture of liquids is equal to the vapour pressure of the pure componenet multiplied by its mole fraction

Question 18

Pi = DEFINE THE TERMS

HINT = Pi = partial vapour pressure of the pure compoennt of the gaseous mixture

Answer 18

Pi1 X Xi

Pi1 = vapour pressure of the pure component i
Xi = mole fraction of I

Question 19

What equation is formed when RAOULTS AND DALTONS laws are combined

Answer 19

P = PaXa + PbXb