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What is the molality of a solution made by dissolving 10 moles of solute in 5 kg

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Question: What is the molality of a solution made by dissolving 10 moles of solute in 5 kg of solvent? (2022)

Options:

  1. 2 m
  2. 1 m
  3. 0.5 m
  4. 3 m

Correct Answer: 2 m

Solution: 

Molality (m) = moles of solute / kg of solvent = 10 moles / 5 kg = 2 m.

What is the molality of a solution made by dissolving 10 moles of solute in 5 kg

Practice Questions

Q1
What is the molality of a solution made by dissolving 10 moles of solute in 5 kg of solvent? (2022)
  1. 2 m
  2. 1 m
  3. 0.5 m
  4. 3 m

Questions & Step-by-Step Solutions

What is the molality of a solution made by dissolving 10 moles of solute in 5 kg of solvent? (2022)
  • Step 1: Identify the number of moles of solute. In this case, it is 10 moles.
  • Step 2: Identify the mass of the solvent in kilograms. Here, it is 5 kg.
  • Step 3: Use the formula for molality, which is molality (m) = moles of solute / kg of solvent.
  • Step 4: Plug in the values into the formula: m = 10 moles / 5 kg.
  • Step 5: Calculate the result: 10 divided by 5 equals 2.
  • Step 6: State the final answer: The molality of the solution is 2 m.
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