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Dilution Problems

Learn about dilution and evaporation in molarity calculations, where the amount of solute remains constant as the volume of solvent changes. See how the number of solute particles changes in a diluted solution. Understand the formula for Molarity and how to calculate concentrations in concentrated and dilute solutions.

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Dilution Problems

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  1. Dilution Problems

  2. Dilution & Evaporation • Amount of solvent changes • Amount of solute is constant

  3. It’s the same! A portion of the original solution is diluted What can you say about thenumber of solute particlesin pictures b and c?

  4. Molarity Molarity = # of moles of solute Liters of solution Re-arrange: Molarity x Liters of solution = # of moles of solute

  5. Amount of solute is constant Amount of solute in concentrated solution = Amount of solute in dilute solution

  6. MC X VC = MD X VD (C = concentrated D = dilute) MolarityC X VolumeC = MolarityD X VolumeD

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