A solution is prepared containing a 2:1 mol ratio of dibromo ethane $(C_{2} H_{4} B r_{2})$ and dibromo propane $(C_{3} H_{6} B r_{2})$ what is the total vapour pressure over the solution assuming ideal behaviour?

Vapour pressure
(mm Hg)

$C_{2} H_{4} B r_{2}$
173

$C_{3} H_{6} B r_{2}$
127

Question

A solution is prepared containing a 2:1 mol ratio of dibromo ethane $(C_{2} H_{4} B r_{2})$ and dibromo propane $(C_{3} H_{6} B r_{2})$ what is the total vapour pressure over the solution assuming ideal behaviour?

Vapour pressure	(mm Hg)
$C_{2} H_{4} B r_{2}$	173
$C_{3} H_{6} B r_{2}$	127

TestHub · Accepted Answer

P = P A + P B = P A 0 X A + P B 0 X B = 173 × 2 3 + 127 × 1 3 = 346 + 127 3 = 473 3 = 157.6 ≈ 158 mm of Hg

Chemistry - Liquid Solution Question with Solution | TestHub

Options:

Doubts & Discussion