Question

1. (a) What name is given to the law describing the relationship between volume and pressure at constant temperature? Write a mathematical expression that describes this relationship. (2 marks)

(b) Sketch a graph of the relationship described in part (a).

Answer 1

Explanation:

a) Boyle's law states that pressure is inversely proportional to the volume of the gas at constant temperature.  

$Pressure\propto \frac{1}{Volume}$ (At constant temperature)

The equation given by this law is:

$PV=k$

$P_1V_1=P_2V_2$

where,

$P_1\text{ and }V_1$ are initial pressure and volume respectively.

$P_2\text{ and }V_2$ are final pressure and volume respectively.

b) A graph of the relationship is attached as an image.