Van't Hoff Factor
The Van't Hoff factor (i) for NaCl in dilute aqueous solution is approximately:
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About This Question
- Subject
- chemistry
- Chapter
- solutions
- Topic
- van't hoff factor
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
2
The Van't Hoff Factor (i) accounts for the degree of association or dissociation of a solute.
- Formula for complete dissociation: i=number of particles after dissociation.
- For NaCl (an electrolyte): NaCl→Na++Cl−
- Since 1 mole of NaCl yields 2 moles of ions, for a dilute solution where dissociation is considered complete, i≈2. This value is used to calculate the 'effective' concentration of particles for colligative properties.
This easy difficulty chemistry question is from the chapter solutions, covering the topic of van't hoff factor. It appeared in the 2025 exam.
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