3.3 - Moles and volume

Question 1

1000cm3 =

Answer 1

1dm3

Question 2

Formula for moles (2)

Answer 2

Moles = Concentration * Volume

Question 3

Standard solution

Answer 3

Known concentration

Question 4

Preparing a standard solution

Answer 4

Dissolving an exact mass of a solute in a solvent = exact volume of solution

Question 5

At same temperature and pressure

Answer 5

Equal volumes of different gases have the same number of molecules

Question 6

Molar Volume

Answer 6

Volume per mole of a gas molecules at a stated temperature and pressure
(RTP)

Question 7

RTP for molar gas volume

Answer 7

24.0dm3 mol-1

Question 8

Formula for moles (3)

Answer 8

Volume
Moles = ———————————————————————–
Molar gas volume

Question 9

Ideal gas Equation

Answer 9

• Random motion
• Elastic collisions
• Negligible size
• No intermolecular forces

Question 10

Formula for Ideal gas equation

Answer 10

pV=nRT
Pressure = 101x10^3 PA 
Volume = 24.0x10^-3 
Moles  = 1mol
R = 8.31 J Mol-1
Temperature = +273