Question

Why is Boyle’s law graph curved?

Answer 1

Hint : According to Boyle’s law the pressure and the volume are inversely proportional to each other. When the pressure is increased the volume is decreased and when the volume is increased the pressure is decreased. The curve of Boyle’s law is hyperbolic.

Complete Step By Step Answer:
Boyle’s law was given by Robert Boyle. The law states that “The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain constant within a closed system.”
It can be mathematically represented as:
$P{\text{ }}\alpha {\text{ }}\dfrac{1}{V}$ or $PV = k$ where P is pressure of the gas and V is volume of gas and k is a constant.
The pressure and the volume here are inversely proportional to each other. As pressure increases, the volume will decrease. As pressure decreases, the volume will increase.
The graph of Boyle’s law is called the PV curve. This graph of Boyle’s law is not straight but hyperbolic; this is because the statement says that at a constant temperature the pressure and the volume are inversely proportional. So when the pressure is increased the volume decreases and vice-versa.

Note :
Boyle's law can also be used to explain the breathing system working in the human body. This commonly involves explaining how the lung volume may be increased or decreased and thereby causes a relatively lower or higher air pressure within them. This forms a pressure difference between the air inside the lungs and the environmental air pressure, which in turn precipitates either inhalation or exhalation as air moves from high to low pressure.