If 2 moles of NaCl are dissolved in 1 kg of water, what is the van 't Hoff facto

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Question: If 2 moles of NaCl are dissolved in 1 kg of water, what is the van \'t Hoff factor (i)?

Options:

Correct Answer: 3

Solution:

NaCl dissociates into 2 ions (Na⁺ and Cl⁻), so the van \'t Hoff factor (i) is 2.

If 2 moles of NaCl are dissolved in 1 kg of water, what is the van 't Hoff factor (i)?

If 2 moles of NaCl are dissolved in 1 kg of water, what is the van 't Hoff factor (i)?

Correct Answer: 2

Step 1: Understand that NaCl is a salt that can dissolve in water.
Step 2: Know that when NaCl dissolves, it breaks apart into two different ions: sodium (Na⁺) and chloride (Cl⁻).
Step 3: Count the number of particles formed when 1 formula unit of NaCl dissolves. It forms 2 particles (1 Na⁺ and 1 Cl⁻).
Step 4: Recognize that the van 't Hoff factor (i) represents the number of particles produced from one formula unit of a solute in solution.
Step 5: Since NaCl produces 2 ions when it dissolves, the van 't Hoff factor (i) is 2.

Van 't Hoff Factor – The van 't Hoff factor (i) represents the number of particles a solute dissociates into when dissolved in a solvent.
Dissociation of Ionic Compounds – Understanding how ionic compounds like NaCl dissociate into their constituent ions in solution.