Question

A constant pressure air thermometer gave a reading of 47.5 units of volume, when immersed in ice-cold water, and 67 units in a boiling liquid. The boiling point of the liquid is

Answer 1

  Initial volume V1=47.5 units    

  Temperature of ice cold water T1=0∘C=273K          

   Final volume of V2=67 units            

   Applying Charle?s law, we have V1T1=V2T2  

    (where temperature T2 is the boiling point)      

                     or

   T2=V2V1×T1=67×27347.5=385K=112∘C