Solutions Discovery Lab

Recall

Definitions

• Solute – ______________________________________________________________

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• Solvent – ______________________________________________________________

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• Solution – ______________________________________________________________

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 Introduction

 1)      Type of Mixture:

2)      Solutions?

3)      Ratio?

4)      Likely to grab in Beaker A?                                                           Beaker B?

5)      Greater “concentration”?

6)      More “dilute”  “concentration”?

 Definitions

• Concentration – __________________________________________________________

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• Dilute – ______________________________________________________________

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• Concentrated – ___________________________________________________________

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Exploration

1)      Two ways to concentrate

2)      Two ways to dilute

Definitions

• Diluting – ______________________________________________________________

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• Concentrating – __________________________________________________________

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Calculation

Application

1)      If one wanted to make a 2.00 molar solution of baking soda (NaHCO₃) in a 0.500 L volumetric flask, how many grams of baking soda would be needed?

2)      Make this solution

*Synthesis (Critical Thinking)

Some salts when dissolved in water make the level of the solvent decrease when they are added because of the way the particles interact with each other in solution.  You are making up a 1 molar solution of one of these salts.

If you follow the procedure above, will your solution be more concentrated than, more dilute than, or exactly 1 molar?  Explain why?