You must complete Gaseous State and Gas Laws to unlock this Lesson.

BOYLE’S LAW

The relationship between volume and pressure of a gas was first started by Robert Boyle in 1662.

Boyle’s law states that the volume of a given mass of gas is inversely proportional to its pressure, provided that the temperature remains constant.

According to Boyle’s law, volume of a gas increases as the pressure decreases and vice versa.

This relationship is independent of the nature of the gas and it can be expressed mathematically as:

$$V ∝ \frac{1}{P} \\ ∴ V = \frac{k}{p}$$

or $$PV = k$$

Where V = Volume at pressure P

K = A mathematical constant

For a given mass of a gas, the product of its pressure and its volume is always a constant. If the pressure of a given mass of gas increases, its volume will decrease by a similar proportion and vice versa, as long as the temperature remain constant. This relationship can also be expressed mathematically as:

$$P_1 V_1 = P_2 V_2$$

Where V1 = Volume at pressure P1

V2 = Volume at pressure P2

Boyle’s law can still be re-stated as: ‘The pressure of a given mass of gas is inversely proportional to its volume, provided the temperature remains constant.

Lesson tags: Chemistry Lesson Notes, Chemistry Objective Questions, SS1 Chemistry, SS1 Chemistry Evaluation Questions, SS1 Chemistry Evaluation Questions Second Term, SS1 Chemistry Objective Questions, SS1 Chemistry Objective Questions Second Term, SS1 Chemistry Second Term
Back to: CHEMISTRY – SS1 > Second Term