Question

The vapour pressure of a dilute solution of a non-volatile solute is not influenced by *
1-Pressure applied on solution
2-Mole fraction of the solute
3-Nature of the solvent
4-degree of dissociation of the solute​

Answer 1

Answer:

The vapour pressure of a dilute solution of a non-volatile solute is not influenced by degree of dissociation of the solute

Answer 2

Answer:

The vapour pressure of a dilute solution of a non-volatile solute is not influenced by the mole fraction of the solute.

Explanation:

What are colligative properties?

• The properties of a solution which are influenced by the fractions of solute and solvent and independent of the chemical nature of the solute are known as colligative properties.
• There are namely 4 properties of solutions which are colligative. These are:
  1. Vapour pressure
  2. Boiling point
  3. Freezing point
  4. Osmotic pressure

What is the vapour pressure of a solution?

The pressure exerted by the vapour (molecules in the vapour) over a surface of the liquid at equilibrium is known as the vapour pressure of that liquid at that temperature.

Now, the vapour pressure changes in a solution due to the addition of a solute are best understood by Raoult's Law.

Statement of Raoult's law:

The partial pressure of any volatile constituents of a solution at a constant temperature is equal to the vapour pressure of pure constituents multiplied by the mole fraction of that constituents in the solution.

$P_{A} = \chi_{A} \times \mathrm{P}_{A}^{0}$
where,
$P_{A}$ is the partial pressure of a solute
χ is the mole fraction of that solute in the solution
$\mathrm{P}_{A}^{0}$ is the pure vapour pressure of that solute

Thus, as the law suggests, only a volatile solute can bring about a change in the vapour pressure of a solution. Furthermore, the degree of change is dependent upon the mole fraction of that solute in the solution.

Learn more about the vapour pressure of a solution and Raoult's Law by referring to the following links:

Using Raoult's law, show that ∆P = x₂ p° when P° is vapour pressure of a solvent and x₂ is the mole fraction of solute.​
https://brainly.in/question/43033826

Define Vapour Pressure And Factor affecting vapour pressure.​
https://brainly.in/question/12670021

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