Question

A vessel of capacity 600 cubic centimeter contains hydrogen gas at a pressure 3014 cm Hg.What will be the pressure of hydrogen gas,when the vessel is connected to another vessel of 300 cubic centimeter capacity?
by Boyle's law

Answer 1

Hydrogen gas :    V1 = 600 cc      P1 = 3014 cm hg
When the vessel is connected to another vessel which is empty, the gas occupies the entire volume.  Then pressure reduces.  If the gas expands slowly without change in temperature, then,  Boyle's law applies:

     V2 = 600+ 300 = 900 cc
 
      P1 * V1 = P2 * V2
       P2 = P1 V1/ V2 = 600 * 3014 / 900 = 2009.34 cm Hg