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In the following question, A statement o...

In the following question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Colloidal solutions show colligative properties.
Reason (R): Colloidal particles are large in size.

A

Both A and Rare true and R is the correct explanation of A

B

Both A and R are true but explanation of A

C

A is true but R is false

D

A is false and R is True

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the Assertion (A) and Reason (R), we will analyze both statements step by step. ### Step 1: Analyze the Assertion (A) **Assertion (A): Colloidal solutions show colligative properties.** - **Explanation**: Colligative properties are properties that depend on the number of solute particles in a solution, rather than the nature of the solute. These properties include boiling point elevation, freezing point depression, vapor pressure lowering, and osmotic pressure. - **Conclusion**: Colloidal solutions do exhibit colligative properties because they contain a significant number of particles dispersed in the medium. ### Step 2: Analyze the Reason (R) **Reason (R): Colloidal particles are large in size.** - **Explanation**: Colloidal particles typically range in size from 1 nanometer to 1000 nanometers. They are larger than true solutions (which have particles smaller than 1 nanometer) but smaller than suspensions (which have particles larger than 1000 nanometers). - **Conclusion**: While it is true that colloidal particles are larger in size compared to true solutions, the size of the particles does not directly explain why colligative properties are observed in colloidal solutions. ### Step 3: Determine the Relationship Between Assertion and Reason - Both the assertion and the reason are true statements. - However, the reason does not adequately explain the assertion. The colligative properties arise from the number of particles, not their size. ### Final Conclusion - Since both statements are true, but the reason does not explain the assertion, the correct choice is **Option 2**.
To solve the question regarding the Assertion (A) and Reason (R), we will analyze both statements step by step. ### Step 1: Analyze the Assertion (A) **Assertion (A): Colloidal solutions show colligative properties.** - **Explanation**: Colligative properties are properties that depend on the number of solute particles in a solution, rather than the nature of the solute. These properties include boiling point elevation, freezing point depression, vapor pressure lowering, and osmotic pressure. - **Conclusion**: Colloidal solutions do exhibit colligative properties because they contain a significant number of particles dispersed in the medium. ...
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