Question

8) Hexane (P 152 torr ) and cyclohexane (P 97.6 torr) form an ideal solution. At some solution concentration the vapor above the solution is comprised of hexane:cyclohexane molecules in a 1:3 ratio. What is the composition of the solution in mole percentages?

Answer 1

Vapour pressure for hexane po = 152 toor cyclohexanes = 97.6 tror - for As per heway's low PA=XAPA LB = X B PB Given, PP/P = % also RA = 1-XB - or ab al-XA So, PA = DA P Å - 6 PB = (1-XA) På tu) Scanned with CamScanner

Divide © by 0 -) 18A = 4.67%A 1 = (4.67 +1) x4 nA = 1 » 5.67 - Xe - 0.18 I- Xã 1 -0,18 0.82 - mole fraction in Y. XA1 18 . Y = 82%. TSca CamScanner

Now XA = A 2 0,18 n 1 o ² no a 0,82 DA A O, 18 - 0,82 ha - 0, 2195 ho NA Xlo = 21.95 ho u In mole ratio y. Scared with CamScanner