The boiling point of an azeotropic mixture of water and ethyl alcohol is less than that of the theotrical value of water and alcohol mixture.Hence the mixture shows :

The solution is highly saturated.

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

Positive deviation from Raoult's law.

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

Negative deviation from Raoult's law.

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

Nothing can be said.

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

Open in App

Solution

The correct option is B Positive deviation from Raoult's law.
Positive deviations from Raoult's law are noticed when
i. Expreimental value of vapour pressure of mixture is more than calculated value.
ii. Expreimental value of boiling point of mixture is less than calculated value.
iii. $Δ_{m i x i n g} H = + v e$
iv. $Δ_{m i x i n g} V = - v e$

Suggest Corrections

Similar questions

Q. The boiling point of an azeotropic mixture of water and ethyl alcohol is less than that of theoritical value of
water and alcohol mixture. Hence the mixture shows:

Q. The boiling point of an azeotropic mixture of water and ethyl alcohol is less than that of theoretical value of water and alcohol mixture. Hence, the mixture shows :

Question 25
On the basis of information given below mark the correct option. Information On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.
(a) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult's law
(b) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show positive deviation from Raoult's law
(c) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult's law
(d) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult's law

Q. A solution of

C H C l_{3} + C H_{3} C O C H_{3}

shows negative deviation from Raoults law.

Q. CASE1: Read the passage given below and answer the following question.

The solution which obeys Raoult’s law over the entire range of concentration are known as ideal solutions. The solution which does not obey Raoults law over the entire range of concentration, then it is called non-ideal solution. The vapour pressure of such as a solution is either higher or lower than that predicted by Raoult’s law. If it is higher, the solution exhibits positive deviation and if it is lower, it exhibits negative deviation from Raoult’s law.
Some liquids on mixing, form azeotropes which are binary mixture having the same composition in liquid and vapour phase. There are two types of azeotropes. Minimum boiling azeotropes and maximum boiling azeotropes.

Which of the following solutions show negative deviation from Raoult’s law?
[0.77 Mark]

Join BYJU'S Learning Program