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What is the number of moles in 5 liters of a 2 M NaCl solution?

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Question: What is the number of moles in 5 liters of a 2 M NaCl solution?

Options:

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

Correct Answer: 2.5

Solution: 

Moles = Molarity x Volume = 2 moles/L x 5 L = 10 moles.

What is the number of moles in 5 liters of a 2 M NaCl solution?

Practice Questions

Q1
What is the number of moles in 5 liters of a 2 M NaCl solution?
  1. 2.5
  2. 5
  3. 10
  4. 1

Questions & Step-by-Step Solutions

What is the number of moles in 5 liters of a 2 M NaCl solution?
Correct Answer: 10 moles
  • Step 1: Understand what Molarity (M) means. Molarity is the number of moles of solute (like NaCl) per liter of solution.
  • Step 2: Identify the given values. We have a 2 M NaCl solution and a volume of 5 liters.
  • Step 3: Use the formula to find the number of moles. The formula is: Moles = Molarity x Volume.
  • Step 4: Plug in the values into the formula. Moles = 2 moles/L x 5 L.
  • Step 5: Calculate the result. 2 moles/L multiplied by 5 L equals 10 moles.
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