Benzene and toluene from nearly ideal solutions. If at 300k, p_("toluene")^(0)=32.06 mm and p_("benzene")^(0)=103.01mm (a) A liquid mixture is composed of 3 moles of toluene and 2 moles of benzene. If the pressure over the mixture at 300K is reduced, at what pressure does the first vapour form ? (b) What is the composition of the first trace of vapour formed ? (c ) If the pressure is reduced further, at what pressure does the last trace of liquid disappear? (d) What is the composition of the last trace of liquid ?

Benzene and toluene from nearly ideal solutions. If at 300k, p_("tolue

1.	Benzene and toluene from nearly ideal solutions. If at 300k, p_("toluene")^(0)=32.06 mm and p_("benzene")^(0)=103.01mm (a) A liquid mixture is composed of 3 moles of toluene and 2 moles of benzene. If the pressure over the mixture at 300K is reduced, at what pressure does the first vapour form ? (b) What is the composition of the first trace of vapour formed ? (c ) If the pressure is reduced further, at what pressure does the last trace of liquid disappear? (d) What is the composition of the last trace of liquid ?
Answer» <P> SOLUTION :(a) `p=(3)/(5)xx32.06+(2)/(5)xx103.01`…………..(Eqn.3) `=60.44mm` (B) `(1)/(60.44)=(x_(t))/(32.06)+((1-x_(1))/(103.01))`…………(Eqn.5) `x_(t)=0.3181` (c ) `(1)/(p)=((3)/(5))/(32.06)+((2)/(5))/(103.01)`………….(Eqn5) `p=44.25mm` (d) `44.25=x_(t)xx32.06+(1-x_(t))103.01` ...........(Eqn 3) `x_(t)=0.8281`