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STATEMENT-1 : Lyophilic sols can easily ...

STATEMENT-1 : Lyophilic sols can easily be coagulated.
STATEMENT- 2 : Lyophobic sols are stabilised by addition of lyophilic solutions.
STATEMENT- 3 : The colloidal solution of ice in an organic solvent such as `CHCl_(3)` is an example of hydrophobic
sol.

A

T F T

B

F T T

C

T F F

D

F F T

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement one by one and determine their validity based on the principles of colloidal chemistry. ### Step-by-Step Solution: 1. **Statement 1: Lyophilic sols can easily be coagulated.** - **Analysis:** Lyophilic sols (solvent-loving) have a strong affinity between the dispersed phase and the dispersion medium. This strong interaction creates a protective layer around the dispersed particles, making them stable and resistant to coagulation. Therefore, this statement is **false**. 2. **Statement 2: Lyophobic sols are stabilized by the addition of lyophilic solutions.** - **Analysis:** Lyophobic sols (solvent-hating) have a weak affinity between the dispersed phase and the dispersion medium, making them unstable. The addition of lyophilic substances can help stabilize lyophobic sols by forming a protective layer around the dispersed particles, preventing them from coming together and coagulating. Thus, this statement is **true**. 3. **Statement 3: The colloidal solution of ice in an organic solvent such as CHCl₃ is an example of a hydrophobic sol.** - **Analysis:** Ice (solid water) in an organic solvent like CHCl₃ (chloroform) does not dissolve well due to the low affinity between the polar ice and the non-polar organic solvent. This results in a colloidal system where the dispersed phase (ice) is not well integrated into the dispersion medium (CHCl₃), indicating that it is indeed a lyophobic sol, not hydrophobic. Therefore, this statement is also **true**. ### Conclusion: - Statement 1: False - Statement 2: True - Statement 3: True The correct option is: **False, True, True**.
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