Amounts Of Gases

Question 1

What are the gas laws

Answer 1

They describe the behaviour of gases and are summarised by the ideal gas equation

Question 2

What are ideal gases

Answer 2

Gases which obey the ideal gas equation, in practice real gases deviate to at least some extent from this

Question 3

Three factors that the volume of a gas depends on

Answer 3

-temperature
-pressure
-amount of gas in moles

Question 4

Ideal gas equation

Answer 4

pV=nRT

Question 5

What is pressure and it’s units in ideal gas equation

Answer 5

Defined as force per unit area
-unit is pascal(Pa)
-1atm=101,000Pa

Question 6

What is volume and its unit in the ideal gas equation

Answer 6

The amount of space taken up by a sample
-unit is m3

Question 7

How many cm3 in 1dm3

Answer 7

1000cm3 in 1dm3

Question 8

How to convert between cm3 and m3

Answer 8

-from cm3 to m3 divide by 1,000,000
-from m3 to cm3 multiply by 1,000,000

Question 9

SI unit for temperature and how to convert between degrees Celsius and this

Answer 9

-kelvin(K)
-add 273 to degrees Celsius to get to kelvin

Question 10

Value for gas constant and it’s units

Answer 10

8.31Jmol-1K-1

Question 11

How much volume does 1 mole of any gas occupy at room temperature and pressure

Answer 11

24dm3

Question 12

What is the molar volume of a gas

Answer 12

Volume of 1 mole of the gas under stated conditions

Question 13

Unit for volume in ideal gas equation

Answer 13

m3

Question 14

How to convert between atmospheric pressures and pascals

Answer 14

Multiply by 101,000