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If 5 moles of NaCl are dissolved in water, how many moles of Na+ ions are presen

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Question: If 5 moles of NaCl are dissolved in water, how many moles of Na+ ions are present?

Options:

  1. 5 moles
  2. 10 moles
  3. 2.5 moles
  4. 0 moles

Correct Answer: 5 moles

Solution: 

Each mole of NaCl dissociates into 1 mole of Na+ ions. Therefore, 5 moles of NaCl will produce 5 moles of Na+ ions.

If 5 moles of NaCl are dissolved in water, how many moles of Na+ ions are presen

Practice Questions

Q1
If 5 moles of NaCl are dissolved in water, how many moles of Na+ ions are present?
  1. 5 moles
  2. 10 moles
  3. 2.5 moles
  4. 0 moles

Questions & Step-by-Step Solutions

If 5 moles of NaCl are dissolved in water, how many moles of Na+ ions are present?
Correct Answer: 5 moles
  • Step 1: Understand that NaCl (sodium chloride) is a compound that dissociates in water.
  • Step 2: Know that when NaCl dissolves, it breaks apart into Na+ ions and Cl- ions.
  • Step 3: Remember that each mole of NaCl produces 1 mole of Na+ ions.
  • Step 4: Since you have 5 moles of NaCl, you will have 5 moles of Na+ ions as well.
  • Dissociation of Ionic Compounds – Understanding that ionic compounds like NaCl dissociate into their constituent ions in solution.
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