Solution Concentration & Molarity

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Presentation Description

Different units of solution concentration are discussed with a focus on Molarity.

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Moles in Solution:

Moles in Solution Most reactions take place in solution (aqueous state) Need to know amount of substance dissolved in solution ( concentration ) Molarity (M) is the most common unit used for expressing concentration

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Molarity is the ratio between moles of dissolved substance and the volume of solution (in L)

Solving for Concentration: :

Solving for Concentration: Original amt. of solute over original volume Convert solute to moles, volume to L Remember 1 dm 3 = 1 L = 1000 cm 3 = 1000 mL

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Example : What is the concentration (molarity) of a 250. mL solution containing 9.46 g CsBr?

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