A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is 2.20 times the pressure measured at the triple point of water, find the melting point of lead.


Explanation:


Given


Pressure at Melting point= 2.20×Pressure at triple point of water


Formula used


The relation connecting the temperature ( and pressure () of a volumetric thermometer can be represented as,



To compare at two states, this equation can be written as,


K (eqn. 1)


Here Pressure, at the melting point is given as 2.20 times the triple point of water


i.e,


Putting this in eqn. 1, we get,



(Ans.)


So, the melting point of lead is 600.95K


1