Question

A certain Mass of hydrogen gas collected over water at 10 degree celcus and 760mmhg pressure has a Volume of 37degree cm³. calculate the volume when it is dry att s.t.p(s.v.p of water 10 degree celcus =9.2mmhg)

Answer 1

P_Hydrogen=Ptotal-P_{water Vapor}

=(760-9.2)mmHg

=750.8mmHg

750.8mmHg*0.00131579atm/mmHg

=0.987895atm

n=PV/RT

=0.987895atm*0.037L/(O.082057atmLK^-1mol^-1*283K)

=0.0015740207moles

V=22.4L/mol*0.0015740207moles

=0.03526L