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Worksheet 26 : Molarity and parts per million calculations Topic 7

Set A: Definitions Objective: By defining these words, you should become more familiar
with concentration related terms and their definitions.

Define, neatly and clearly, the following concentration related terms.

1. Molarity

2. Parts per million

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Set B : Calculation of molarity Objective: To test your ability to calculate molarity
concentration using molarity equation

Calculate the molarity concentration of the solutions based on the information given.
Use the space to the right to write equation, show set-up, and solve the problem.

3. What is the molarity of 1.0 L NaCl solution
containing 1 mole of the solute?

4. What is the concentration of 1.8 L KNO3 solution
containing 0.5 mole of the solute?

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5. What is the concentration of a solution containing
3.3 moles of solute in every 6 L of the solution?

6. What is the concentration of NH4Cl solution containing
2 moles of the solute in 500 ml of the solution?.

7. What is the molarity of a 1500 ml solution
containing 3 moles of the solute?
Need help? Study Book pg 155 Set 23

8. What is the molarity of a solution in which 28 g of
NaCl is dissolved 2 liter of the solution.

9. What is the molar concentration of a solution in which
522 grams of K2SO4 is dissolved in 1.5 liter of solution?

10. What is the molarity of a solution containing 12 g of
HCl in 500 ml of solution?

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