Molar volume calculations

Question 1

molar volume is

Answer 1

the volume occupied by 1 mol of any gas

Question 2

the molar volume is approximately

Answer 2

the same for all gases, but its value varies with temperature and pressure

Question 3

the value most often used for molar volume is measured at

Answer 3

room temperature and pressure (RTP)

Question 4

room temperature is

Answer 4

298K or 25 degrees C

Question 5

standard pressure is

Answer 5

101 325 kPa or 1 atm

Question 6

the value for molar volume is usually quoted as

Answer 6

24.0dm3 or 24000cm3

Question 7

the symbol for molar volume is

Answer 7

Vm

Question 8

Vm=

Answer 8

24.0 dm3 mol-1 at RTP

Question 9

the equation for Vm =

Answer 9

Vm = 24.0 = volume in dm3 / amount in mol
Vm = 24000 = volume in cm3 / amount in mol

Question 10

if you are given an equation that involves one or more gases and a solid or liquid, and you use the information about the solid or liquid in mol, then you can

Answer 10

combine two calculation methods that we have already used

Question 11

in calculations involving gases and liquids/solids, the common point is

Answer 11

the amount in mol

you can convert solids and liquids to mol and mass while you can convert gases to mol and volume

Question 12

the three steps for calculations involving gases and solids/liquids are:

Answer 12

1) calculate the amount in moles from either the mass or volume (depending on which one given)
2) use the ratio of the reaction in the equation to work out the amount (moles) of your other substances involved
3) convert this amount to mass or volume, depending on what the question asks