Moles and Volumes (3.3)

Question 1

What is the calculation that connects moles (n), concentration (c) and Volume (v)?

Answer 1

n = c x V
(when the volume is in decimetres)

n = c x V / 1000 (when the volume is in centimetres cubed)

Question 2

What is cm^3 the same as?

Answer 2

ml/ millilitres

Question 3

What is dm^3 the same as?

Answer 3

l / litres

Question 4

What is concentration measured in?

Answer 4

mol dm^-3

Question 5

What is the molar gas volume at RTP?

Answer 5

-24 (when V is in dm^3)

-24000 (when V is in cm^3)

Question 6

What is RTP?

Answer 6

Room Temperature (&) Pressure

Question 7

What is the ideal gas equation?

Answer 7

pV=nRT

Question 8

What do you have to assume when using the ideal gas equation?

Answer 8

-Random molecule motion

-Collisions are elastic/Conserve energy

-Negligible size

-No intermolecular forces between molecules

Question 9

What is the constant in pV=nRT

Answer 9

R - it always = 8.314 k mol-1 K-1

Question 10

How do you convert degrees Celsius into Kelvins?

Answer 10

+ 273

Question 11

How do you convert dm^3 to m^3

Answer 11

x 10^-3

Question 12

How do you convert cm^3 to m^3?

Answer 12

x 10^-6

Question 13

what does the p stand for in pV=nRT?

Answer 13

Pressure

Question 14

What is pressure measured in?

Answer 14

Pascals

Question 15

How do you convert kPa to Pa?

Answer 15

x 10^3