CHEM 2480 Chapter Notes -Concentration, Reagent, Ammonium Hydroxide
12 Oct 2013
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Solutions for problem set 1: calculation of concentrations and preparation of solutions. [ch coo ] = (12. 4/100) (1. 00 10 m) = 1. 24 10 m. [h ] = [ch coo ] = 1. 24 10 m. [ch cooh] = 1. 00 10 m - 1. 24 10 m = 8. 76 10 m. Determine the analytical concentration of each of the following solutions: a. 5. 000 g koh are dissolved in enough water to make 1. 00 l of solution. (ans. 0. 08911 m) b. c. 15. 00 g acetic acid are dissolved in enough water to make 100. 0 ml of solution. (ans. 10. 00 ml of 10. 00 m h so are diluted with sufficient water to make 100. 0 ml. Describe the preparation of 1. 50 l of 0. 100 m sodium phosphate from the solid reagent na po 12h o. Dissolve 57. 0g of sodium phosphate in water and dilute to 1. 50l. Describe the preparation of 1. 50 l of 0. 100 m na from na po 12h o.
