Question

The graph for Boyle’s law is called:
A.Isotherm
B.Hypertherm
C.Hypertherm
D.None of the above

Answer 1

Hint: Basically, Boyle’s law is a gas law which states that the pressure exerted by a gas is inversely proportional to the volume occupied by it. The graph of this law is generally plotted between V vs P at constant temperature for a fixed mass of a gas.

Complete step by step answer:
Boyle’s law states that the pressure and volume of a gas are inversely proportional to each other as long as the temperature and the quality of gas are kept constant. This law was given by Anglo Irish chemist Robert Boyle in the year 1662.
Now, the relationship between the volume and pressure can be expressed as:
 $P\alpha \dfrac{1}{V}$
Where P is the pressure exerted by the gas and V is the volume occupied.
Further, this relation can be converted into an equation by adding a constant ‘k’. The equation is as shown:
 $P = k(\dfrac{1}{V})$
 $PV = k$
Further, this law can also be expressed as:
 ${P_1}{V_1} = {P_2}{V_2}$
Where ${P_1}$ and ${P_2}$ are initial and final pressures exerted by the gas whereas ${V_1}$ and ${V_2}$ are initial and final volumes occupied by the gas.
Now, the pressure $\dfrac{v}{s}$ volume curve for a fixed amount of gas at constant temperature is as shown:

Now, the graph of Boyle’s law is called an isotherm because iso means the same and term means thermal or temperature and hence the temperature remains constant.
Hence, option A is correct.

Note: Some of the applications of Boyle’s law in our daily life are soda can, spray paint, drawing fluid into a syringe and many more. Moreover, if a scuba diver rapidly ascends from a deep zone towards the surface of water, the decrease in pressure can cause the gas molecules in the body to expand and these gas bubbles can cause damage to the diver's organs and may also cause death. This expansion of gas is also an example of Boyle’s law.