Ideal Gases

Which of the following is an ideal gas expression?

• pV = mRT

• pV = nRT

• pV = M_rRT

• pVn = RT

Which of the following gases least resembles an ideal gas?

• Helium

• Hydrogen

• Ammonia

• hydrogen chloride

What are the units for volume in the ideal gas law?

• m³

• cm³

• dm³

• litres

Which of the variants in the ideal gas law is obtained from the data booklet?

• p

• V

• T

• R

Which of the following curves is for an ideal gas?

• 
• 
• 
• 

Under which conditions is a gas most likely to behave ideally?

• low pressure

• low temperature

• high pressure

• low volume

Which of the curves in the image shows the greatest deviation from ideal gas behaviour?

• the black curve

• the blue curve

• the green curve

• the red curve

Which of the gases listed below would correspond to the black curve in this image?

• Carbon dioxide

• Carbon monoxide

• helium

• Ammonia

What happens to a real gas at high pressure that makes it become less ideal?

• particles lose energy and so exert less pressure

• particles gain energy and so exert more pressure

• container volume decreases so particles occupy significant volume

• container volume increases so particles occupy significant volume

What happens to a real gas at low temperatures that makes it behave less ideally?

• particles have less energy and so exert less pressure on the container

• particles have more energy and so exert more pressure on the container

• volume of container decreases so particles occupy significant volume

• volume of container increases so particles occupy significant volume