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Published byGriffin Craig Modified over 5 years ago

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Section 3: Dilutions Dilutions Calculations

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DDilutions llowers concentration, or molarity but… ttotal moles of solute does not change A. Dilutions mol L M = mol L M =

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A. Dilutions 6 mol in 100 mL 6 mol in 200 mL same # of mol

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A. Dilutions

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Dilutions A. Dilutions initial Molarity initial Volume Molarity of dilute solution Volume of dilute solution

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HHow many mL of 2.00 M MgSO 4 must be diluted to prepare 100 mL of 0.400 M MgSO 4 ? V 1 = (0.400 M) x (100 mL) = (2.00 M) B. Calculations Finding Volume (V 1 ) 20.0 mL M1M1 V2V2 M2M2 V1V1 (2.00 M) x V 1 = (0.400 M) x (100 mL)

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2200 mL of 10.0 M NaOH is diluted to 500 mL, what is the molarity of the dilute solution? M 2 = (10.0 M) x (200 mL) = (500 mL) B. Calculations Finding Molarity (M 2 ) 4.00 M M1M1 V2V2 M2M2 V1V1 (10.0 M) x (200 mL) = M 2 x (500 mL)

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