Calculate the molarity of each of these solutions: a.) A 2.321-g sample of is dissolved in enough water to make 250.0 mL of NaHCO3 solution. b.) A 275.7-mg sample of is dissolved in enough water to make 750.0 mL of K2Cr2O7 solution. c.) A 0.1432-g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to Cu2+ form ions and then water is added to make the total volume of 500.0 mL. (Calculate the molarity of Cu2+ .)
Calculate the molarity of each of these solutions: a.) A 2.321-g sample of is dissolved in enough water to make 250.0 mL of NaHCO3 solution. b.) A 275.7-mg sample of is dissolved in enough water to make 750.0 mL of K2Cr2O7 solution. c.) A 0.1432-g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to Cu2+ form ions and then water is added to make the total volume of 500.0 mL. (Calculate the molarity of Cu2+ .)
Chapter7: Solutions And Colloids
Section: Chapter Questions
Problem 7.23E
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Calculate the molarity of each of these solutions:
a.) A 2.321-g sample of is dissolved in enough water to make 250.0 mL of NaHCO3 solution.
b.) A 275.7-mg sample of is dissolved in enough water to make 750.0 mL of K2Cr2O7 solution.
c.) A 0.1432-g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to Cu2+ form ions and then water is added to make the total volume of 500.0 mL. (Calculate the molarity of Cu2+ .)
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