The pressures of the gas in a constant volume gas thermometer are 80 cm, 90 cm and 100 cm of mercury at the ice point, the steam point and in a heated wax bath respectively. Find the temperature of the wax bath

200°C

Explanation:

Given,

Pressure at ice point, P_ice , is 80 cm of Hg

Pressure at steam point, P_steam, is 90cm of Hg

Pressure of wax bath, P, is 100cm of Hg

Formula used

We have the relation between Pressure and temperature of a constant volume gas thermometer as

This can be written as

Where,

P_ice =Pressure at ice point=80cm of Hg

P_steam= Pressure at steam point = 90cm of Hg,

P=Pressure of wax bath=100cm of Hg,

T_ice=Ice point temperature= 0°C,

T_steam= Steam point temperature=100°C

T=?

Putting the given values in the above equation results,

(Ans.)

The temperature of the wax bath is 200° C