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Solution Concentration

Solution Concentration. Concentration is a measure of how much solute is dissolved in a specific amount of solvent or solution Molarity (M) = mol solute L solution. Molarity example #1.

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Solution Concentration

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  1. Solution Concentration Concentrationis a measure of how much solute is dissolved in a specific amount of solvent or solution Molarity (M) = mol solute L solution

  2. Molarity example #1 • 1. You have 0.8 L of a 0.5 M HCl solution. How many moles of HCl does this solution contain?

  3. Molarity Example #1 • 2. How many moles of NaOH are contains in 65.0 mL of a 2.20 M solution of NaOH in water?

  4. Heterogeneous Mixtures • Suspensions – a mixture containing particles that settle out if left undisturbed • Can separate them with filtration • The suspended particles are fairly large (compared to solute particles in a solution)‏ (greater than 1000 nm) Ex. Sand in water 2) Colloids – a mixture with particles of intermediate size (between those of solution and suspension)‏(Between 1-1000 nm)

  5. Cannot separate by filtration Tend to look cloudy The particles are large enough to scatter light – called the Tyndall Effect Ex. Headlights in a fog, milk, gelatin - Suspensions can also show the Tyndall Effect, but solutions do not because the particles are not large enough to reflect light

  6. 3) Solutions- • a. In a solution, the dissolved solute particles are so small that they cannot be seen. (Less than 1 nm in size) • b. They remain dissolved in the solution and will not settle out. • c. Even if you pour the solution through filter paper, both the solute and the solution will pass through the paper. • Ex. Salt Water

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