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Unformatted text preview: GENERAL CHEMISTRY CHAPTER 4 – REACTIONS IN AQUEOUS SOLUTION PAGE 16 OF 35 Example : Calculate the molarity of 400.0-mL of a solution that contains 45.0 g of formaldehyde (CH 2 → How do we determine the concentration of the ions in solution? O) Concentration of Ions Example : What is the concentration of each ion in a 2.0 M NaNO 3 solution? Example : What is the concentration of each ion in a 2.0 M Cu(NO 3 ) 2 → How do you prepare a 1 L of 1.00 M NaCl solution? solution? Preparation of a Solution Example : How would you prepare 400.0-mL of 0.30 M NaCl solution from solid NaCl? GENERAL CHEMISTRY CHAPTER 4 – REACTIONS IN AQUEOUS SOLUTION PAGE 17 OF 35 Dilution and Multiple Dilutions → Many substances are too “concentrated” for us to use, eat, or drink Example : Frozen Orange Juice Very concentrated; we dilute with water so we can drink it Example : Coffee Solid beans are diluted with water, but some people dilute further and dilute with milk Depending on how much water is added when coffee is brewed, the coffee will be strong or weak...
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- Fall '09
- L. OLDEWURTEL