Objective 01: Gas Behaviour and its Governing Laws

Question 1

What is the starting point of thermodynamics related to gases?

Answer 1

The behaviour of an ideal/perfect gas

Question 2

Perfect Gas

Answer 2

A gas which is sufficiently removed from its condensation temperature that it will remain in a gaseous state when subjected to the changes of temperature and pressure of the operation being considered

Question 3

What is the benefit of understanding the behaviour of a Perfect Gas?

Answer 3

It can be used as a model for the behaviour of real gases

Question 4

What scale of temperature is normally used for thermodynamic calculations related to gases?

Answer 4

Kelvin

Question 5

What type of pressure is normally used for thermodynamic calculations related to gases?

Answer 5

Absolute pressure

Question 6

What 3 laws is the General Gas Law derived from?

Answer 6

1. Boyle’s Law
2. Charles’ Law
3. Gay-Lussac’s Law

Question 7

Boyle’s Law

Answer 7

The product of pressure and volume of a gas is always the same if the temperature is constant

Question 8

Isothermal

Answer 8

Constant temperature

Question 9

Gay-Lussac’s Law

Answer 9

The ratio of pressure to temperature is always the same if the volume is constant

Question 10

Charles’ Law

Answer 10

The ratio of volume to temperature is always the same if the pressure is constant

Question 11

What variable does the Ideal Gas Law contain not found in the General Gas Law?

Answer 11

Mass

Question 12

What does the constant R represent in the Ideal Gas Law?

Answer 12

Characteristic constant for the specific type of gas, measured in kJ/kgK