Solution Concentration and Molarity

By Hannah Kendrick and Andrea Bent

Chemistry-Fall 2014

Basically: the concentration of a solution is how much of a solute is dissolved in a certain amount of it. One way of measuring the concentration is by the molarity. Molarity is the moles of the solute you have divided by the liters of solution you have.

Sources:

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Granville County Public Schools. “11.05 Solution Concentration and Molarity.” Haiku. Granville County Public Schools, 1 December 2014. Web. 1 December 2014. <https://gcs.haikulearning.com/pooleb/nrmchemistry_simmons_fall14/cms_page/view/16333871>

Activity!

Question for you: If you have 2 liters of Coke, and Coke has 4 moles of sugar in every half-liter serving, how many moles of sugar do you drink if you drink a liter and a half of Coke (and then get Diabetes)?

Another question! If you have 5 liters of orange juice, and that orange juice has 500 moles of preservative in it, what is the concentration of preservative?

One more thing! I have 3 liters of sugar/water solution. If the concentration of sugar water is 0.5 moles of sugar per liter, how much sugar is mixed into the water?

QUIZ!!!

1)  What is concentration?

2) Determine the molarity (concentration) of 2.60 moles of NaOH dissolved in a 3.50 L solution.

3) What is the concentration (molarity) of 1.75 L of solution made from dissolving 425 grams of BaCl2 in water?

4) How many gram of NaOH are present in 75.0 mL of a 2.10 M   NaOH solution?

5) What mass of glucose (C6H12O6) must be used to make 250.0 mL of a 1.25 M solution?

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