Vapour pressure of pure A=100 torr, moles =2, vapour pressure of pure B=80 torr, moles =3 Total vapour pressure of mixture is

Question

Vapour pressure of pure A=100 torr, moles =2, vapour pressure of pure B=80 torr, moles =3 Total vapour pressure of mixture is (A) 440 torr (B) 460 torr (C) 180 torr (D) 88 torr

Tardigrade Admin · Accepted Answer

P text Total =pA xA+pB xB =100 × (2/5)+80 × (3/5)=88 text torr

Q. Vapour pressure of pure $A = 100$ torr, moles $= 2,$ vapour pressure of pure $B = 80$ torr, moles $= 3$ Total vapour pressure of mixture is

440 torr

460 torr

180 torr

88 torr

$P_{Total} = p_{A} x_{A} + p_{B} x_{B}$

$= 100 \times \frac{2}{5} + 80 \times \frac{3}{5} = 88 torr$

Q. Vapour pressure of pure A=100 torr, moles =2, vapour pressure of pure B=80 torr, moles =3 Total vapour pressure of mixture is