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Chapter 24: Problem 3

The vapour phase is relatively richer in the component whose addition to the liquid mixture results in an increase of total vapour pressure. This is the statement of (a) Duhem-Margules law (b) Raoult's law (c) Konowaloff's rule (d) none of the above

Short Answer

Expert verified
The correct answer is (c) Konowaloff's rule.

Step by step solution

01

Review Duhem-Margules Law

First, Duhem-Margules law is considered. This law deals with the deviation from Raoult's Law and gives a relation between activity coefficients of the components in a binary system. While it involves partial vapour pressures, it does not specifically relate to the increase of total vapour pressure upon addition of a component.
02

Review Raoult's Law

Next, Raoult's law is reviewed. This law states that the partial vapor pressure of each component of an ideal mixture of liquids is equal to the vapor pressure of the pure component multiplied by its mole fraction in the mixture. While it does relate to the vapour phase and vapour pressure of a component in the mixture, it does not address the scenario in which the component is added to the mixture resulting in an increase of total vapour pressure.
03

Review Konowaloff's Rule

Finally, Konowaloff's rule is analyzed. It is this rule that states that the vapour phase is relatively richer in the component whose addition to the liquid mixture results in an increase of total vapour pressure. Hence, this is the statement that directly answers the question.

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Most popular questions from this chapter

Mathematical form of Henry's law is (a) \(m=k_{p}\) (b) \(p=k_{m}\) (c) \(\mu \frac{k}{m}\) (d) \(m \frac{1}{k} p\)

A solution formed on mixing of two liquids is ideal if (a) \(\Delta V_{\operatorname{mix}}=0, \Delta H_{\operatorname{mix}} \neq 0\) (b) \(\Delta V_{\operatorname{mix}} \neq 0, \Delta H_{\operatorname{mix}}=0\) (c) \(\Delta V_{\operatorname{mix}}=0, \Delta H_{\operatorname{mix}}=0\) (d) \(\Delta V_{\operatorname{mix}}=0, \Delta H_{\operatorname{mix}} \neq 0\)

In a solution, the vapour pressure of a component at a given temperature is equal to the mole fraction of that component in the solution multiplied by the vapour pressure of that component in the pure state. This is the statement of (a) Henry's law (b) Raoult's law (c) Konowaloff's law (d) none of the above

Which of the following is not true about the applicability of steam distillation? (a) The organic liquid to be purified should be immiscible with water. (b) It should have high molecular weight. (c) It should have high vapour pressure. (d) The impurities present should be volatile.

Triethylamine-water system is an example of (a) upper CST (b) lower CST (c) upper as well as lower CST (d) none of the above
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