70Molarity-Ans

# 70Molarity-Ans - MOLARITY GCHEM I LAB CONCEPT PROBLEMS...

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MOLARITY GCHEM I LAB CONCEPT PROBLEMS 1. If 5.505 moles of NaOH is dissolved in 2.13 liters of H 2 O, what is the molarity of the solution ? Molarity = moles solute / volume solvent (L) = 5.505 / 2.13 = 2.5845 2.58M 2. You have 10.00 moles of CuSO 4 and wish to make 4.3 M CuSO 4 solution. What will be final volume of solution ? Volume Solvent (L) = moles solute / molarity = 10.00 / 4.3 = 2.32558 2.3 Ls 3) How many moles of NaCl will be required to make 335.0 mL of 5.00 M NaCl solution ? Moles Solute = (molarity)(volume solvent (L)) = (5.0) (335 / 1000) = 1.675 1.68 M 4) What is molarity of a HCl solution if the solution contains 1.865 grams HCl / 150. mL of solution? Molarity = (grs solute/MM) / volume solvent (L) = (1.865/36.45) / (150.0/1000.0) = 0.3411 0.341 M 1) What is molarity of the solution that contains 145.0 grams of NaOH dissolved in 6.00 liters of water ? Molarity = (145.0 / 40.00 ) / 6.00 = 0.6041 0.604 M 2) How many liters of 4.22 M NaOH solution will you make if you add water to 380.5 grams of NaOH ? Volume NaOH Solution = (380.5 / 40.00) / 4.22 =

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## This note was uploaded on 07/28/2011 for the course CHM 2045 taught by Professor Eng during the Spring '10 term at UNF.

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70Molarity-Ans - MOLARITY GCHEM I LAB CONCEPT PROBLEMS...

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