Question

The solution which shows positive or negative deviation from Raoult's law is called

• A. Ideal solution
• B. True solution
• C. Non-ideal solution
• D. Colloidal solution

Hint:

Non-ideal solutions show deviations from Raoult's law due to differences in intermolecular forces between the solute and solvent.

Answer 1

The Correct Option is C

Step 1: Understand Raoult's law.
Raoult's law states that the partial vapor pressure of each volatile component in a solution is directly proportional to its mole fraction in the solution. Ideal solutions obey Raoult's law perfectly, meaning they show no deviation from it.
Step 2: Understand deviations from Raoult's law.
- Non-ideal solutions show either positive or negative deviations from Raoult's law. These deviations occur when the interactions between molecules in the solution differ from those between the pure components. - Ideal solutions obey Raoult's law exactly, showing no deviation. - True solutions and colloidal solutions are not classified based on their adherence to Raoult's law.
Step 3: Apply to the options.
Non-ideal solutions are the ones that show deviations from Raoult's law, making option (C) the correct answer.
Final Answer: \[ \boxed{\text{Non-ideal solution}} \]