CHM 2353 Laboratory- expt 1

CHM 2353 Laboratory- expt 1 - CH M 2353 L abor ator y L ab...

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1 CHM 2353 Laboratory Lab 1 Water pH, Alkalinity and Hardness Sept. 15 th and 23 rd 2010
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2 Concentration Units molarity (moles/litre) molality (moles/kg solvent) mole fraction (moles A/total moles) ppm (mass ratio of 10 -6 ) for aq solution 1 ppm = 1 mg per 1 L
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3 Concentration units… Molarity C Mass percent m/m% Percent by volume v/v% Mass/volume percent m/v% solution solute V n solution g 100 solute g m m solution solute x = solution mL 100 solute mL V V solution solute x = solution mL 100 solute g V m solution solute x = CHM2353 3 Laboratory
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4 More concentrations… Parts per million ppm Molality m Mole Fraction χ solution L solute mg solution g 10 solute g solution parts 10 solute part 1 6 6 x x = solvent kg 1 solute mol m n solvent solute x = moles total A" " of mol n n total A x = CHM2353 4 Laboratory
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Even more concentrations… Parts per million CaCO 3 ppm CaCO 3 Parts per million nitrate ppm NO 3 - Parts per million nitrate-N ppm nitrat e-N 3 3 3 Ca CaCO mole 1 CaCO mg x10 100 solution L sources) all (from n 2 + - 3 - 3 3 NO NO mole
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This note was uploaded on 09/09/2010 for the course CHM chm 2353 taught by Professor Pellwendy during the Fall '10 term at University of Ottawa.

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CHM 2353 Laboratory- expt 1 - CH M 2353 L abor ator y L ab...

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