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Van't Hoff factor is highest for KHSO4 ∴ colligative property (ΔTf) will be highest for KHSO4

1. A and R are true and (R) is the correct explanation of (A)
2. A and R are true but (R) is not the correct explanation of (A)
3. A is true but R is false
4. A is false but R is true

Correct answer: A and R are true and (R) is the correct explanation of (A)

Solution

The Van't Hoff factor indicates the number of particles a solute dissociates into in solution, and since KHSO4 dissociates into multiple ions, it has a higher Van't Hoff factor, leading to a greater change in freezing point (ΔTf), thus making the statement correct.

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