CHEM
VI Solutions A

# VI Solutions A - VI Solutions Solutions Terms Solute Part...

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VI Solutions

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Solutions Terms Solute Part in the lesser amount Solvent Part in the greater amount Dilution Reduce the concentration by adding solvent
Concentration Units Mass percent/ weight percent (%w/w) gsolute gsolution x100=%w /w 5.0%NaC lsolution = 5gNaC l 100gsolution So, in this solution, you have 5 g NaCl and 95 g H 2 O

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% by volume Concentration Units volumesolute volumesolution x100=%volume A bottle of wine contains 12.5% alcohol by volume. 12 .5 mL ethanol 100 mL w ine x100=12 .5%volume
Concentration Units ppm = parts per million gsolute 10 6 gsolution 5.0ppmNaC lsolution = 5mgNaC l Lsolution This is a very dilute solution so, density of the solutions is essentially the same as the density of water = 1.0 g/ mL Therefore, 10 6 g solution = 10 6 mL = 10 3 L So, gsolute 10 6 gsolution = gsolute 10 3 Lsolution = mgsolute L solution

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Concentration Units Molarity (M) molsolute Lsolution = M
Concentration Units Molality (m) Mole fraction (X) molsolute kgsolvent = m molsolute mol solute+molsolvent = X

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• Spring '08
• Kramer

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