MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mole Fraction

An ideal solu...

Question

An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are 2.619 kPa and 4.556 kPa, respectively, the composition of vapour (in terms of mole fraction) will be

A

0.638 MeOH, 0.365 EtOH

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

0.365 MeOH, 0.635 EtOH

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

0.574 MeOH, 0.326 EtOH

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

0.173 MeOH, 0.827 EtOH

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 0.365 MeOH, 0.635 EtOH
$P_{E t O H} = P_{E t O H}^{\circ} \times$ Mole fraction of EtOH in liquid phase
$= P T \times$ Mole fraction of EtOH in vapour phase
Thus, mole fraction of EtOH in vapour phase
$= \frac{P^{'}}{P_{T}} = \frac{4.556}{4.556 + 2.619} = 0.635$

Suggest Corrections

thumbs-up

0

Similar questions

Q. An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are

2.619 K P_{a}

4.556 K P_{a}

respectively, then the composition of vapour (in terms of mole fraction) will be:

Q. The vapour pressure of ethanol and methanol are

44.5 m m H g

88.7 m m H g

, respectively. An ideal solution is fromed at the same temperature by mixing

60 g

40 g

of methanol. Calculate the total vapour pressure of the solution and the mole fraction of methanol in the vapour.

Q. The vapour pressure of ethanol and methanol are

42.0 mm

88.5 mm Hg

respectively. An ideal solution is formed at the same temperature by mixing

46.0 g

of ethanol with

16.0 g

of methanol. The mole fraction of methanol in the vapour is:

Q. The vapour pressure of ethanol and methanol are

44.5 m m

H g

88.7 m m

H g

respectively. An ideal solution is formed at the same temperature by mixing

60 g

of ethanol with

40 g

of methanol. The total vapour pressure of the solution and the mole fraction of methanol in the vapour are respectively:

Q. The vapour pressures of ethanol and methanol are 42.0 mm Hg and 88.5 mm Hg respectively. An ideal solution is formed at the same temperature by mixing 46.0 gm of ethanol with 16.0 gm of methanol. The mole fraction of methanol vapour is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Reactions in Solutions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon