3 Kool Aid Kool Aid is a solution Mixture of solutes dissolved in solventsSoluteDissolved particles in a solutionsugarSolventThe dissolving medium of a solutionwater
4 Grams per Literrepresent the mass of solute divided by the volume of solution50g sugar/ 100 g waterThe ratio would be 1:21 part sugar to 2 parts water
5 Molarity moles of solute divided by liters of solution. Calculate the number of moles of dissolved solute and divide by the volume in liters of the total solution, yielding units of moles per liter.
6 Grams per liter Moles per liter Grams of solute Liters of solvent moles of soluteLiters of solventg/LMGrams per literMolarity180 g C6H12O61 L H2O1 mol C6H12O61 L H2O= 180 g/L= 1M solution180 g C6H12O6= 1 mol C6H12O6
7 Molarity of Pepsi Cola 12 fl oz = 355 ml = .335 L What is the g/L?? 41g/.335 L = 122 g/LWhat is the Molarity1 mole = 180 g sugar41 g = .23 mol sugar.23 mol sugar.335 L Water= .69 M
8 How many moles of HNO3 are needed to prepare 5. 0 liters of a 2 How many moles of HNO3 are needed to prepare 5.0 liters of a 2.0 M solution of HNO3?2.5510155.0 liters2.0 MX moles=
9 Parts Per Million (ppm) a ratio of one part of solute to one million parts of solvent, is usually applied to very dilute solutions.Chorine in a pool7.2 – 7.4 ppmTo calculate parts per milliondetermine the mass of solvent and solutedivide the mass of the solute by the total mass of the solution.Multiply by 106 (1 million) and expressed as parts per million (ppm).
10 Practice Problem/ ppmThe Dead Sea is the saltiest sea in the world. It contains 332 grams of salt per 1000 grams of water. What is the concentration in parts per million (ppm)?.332 ppm332 ppm33,200 ppm332,000 ppm332 g1000 gGrams soluteGrams solvent=332,000X 106
11 Percent CompositionThe ratio of one part of solvent to one hundred parts of solvent and is expressed as a percent.To calculate percent compositiondetermine the mass of solvent and solutedivide the mass of the solute by the total mass of the solution.Multiply by 100 and expressed as a percent.
12 Percent CompositionThe Dead Sea is the saltiest sea in the world. It contains 332 grams of salt per 1000 grams of water. What is the percent composition?.0332%.332%33.2%332%332 g1000 gGrams soluteGrams solvent=33 2X 100
13 Combine Both ConceptsWhat is the concentration of a 4% solution converted to parts per million (ppm)4,000 ppm40,000 ppm400,000 ppm4,000,000 ppmStep 1: Convert from percent to concentration4%/100.04.04 x 106 (1,000,000)