Dilutions of Solutions

Dilutions of Solutions - Dilutions of Solutions Or: Why...

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Dilutions of Solutions Or: Why laundry detergent works.
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Dilutions Given a 1 liter of a 1 M NaCl solution, what will happen if I add a second liter of water? Is there a change in the number of moles of solute? What changes?
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How many moles? First step: How many moles were in the flask when we started? Remember: M = n / V
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New Molarity Since the number of moles (n) did not change between the original solution and the new solution, calculate the new molarity based on the new volume (2 liters)
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Actually… Whenever we want to determine number of moles in a solution where we know the concentration and the volume… M = n / V M x V = n
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Practice #1 If I use 0.5 L of a 5 M solution of NaCl, how many moles of NaCl am I using?
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Let’s Make a Dilution! I want to make 3 liters of a 2.5 M solution of NaCl from my infinite source of 5 M NaCl Solution A (original) = 5 M NaCl Solution B (desired) = 3 L of 2.5 M NaCl
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First Step in a Dilution First, figure out the number of moles you
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This note was uploaded on 12/24/2011 for the course ECON 2023 taught by Professor Mike during the Spring '11 term at Bob Jones University.

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Dilutions of Solutions - Dilutions of Solutions Or: Why...

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