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a) 750 mL of 0.172 F K,Cr,O, from the solid salt. b) 50 litres of a solution that is 0.1 F in Na,SO, from solid Na,SO4. c) 2 litres of a solution that is 0.015 M in Na* from solid NaCl.

a) 750 mL of 0.172 F K,Cr,O, from the solid salt. b) 50 litres of a solution that is 0.1 F in Na,SO, from solid Na,SO4. c) 2 litres of a solution that is 0.015 M in Na* from solid NaCl.

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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H.W:- 1-Show by calculations how could you prepare the following solutions: a) 750 mL of 0.172 F K,Cr,O, from the solid salt. b) 50 litres of a solution that is 0.1 F in Na,SO, from solid Na,SO4. c) 2 litres of a solution that is 0.015 M in Na* from solid NaCl. d) 20 litres of a solution that is 0.202 M in Na* from a 2.42 F solution of Na,SO4. 2- A solution of concentrated HCI has specific gravity of 1.185 and percentage is 36.5 % (w/w) HCl. Explain how 1.50 litres of approximately 0.3 F HCI should be prepared from the concentrated solution. 3- Describe the preparation of 400 mL of 6 F H;PO4 from the commercial solution which is 85% (w/w) H,PO4 and has density of 1.69 g/mL. 4- Describe the preparation of 200 mL of 3 F H,SO, from the concentrated solution which is 95% (w/w) H,SO, and has density of 1.84 g/mL. 5- Calculate the formal concentration of 12% (w/w) CuSO, solution which has density of 1.13 g/mL. 6- A solution was prepared by dissolving 1.68 g of K,Fe(CN), in water and diluting exactly to 500 mL. Calculate: a) the formal concentration of K,Fe(CN)6 . b) The molar concentration of K assuming complete dissociation. c) the weight-volume percent of K,Fe(CN), . d) the weight-weight percent of K,Fe(CN), if the density of solution = 1.008 g/mL. e) The number of moles Fe(CN), in 16 mL of the solution.
Transcribed Image Text:H.W:- 1-Show by calculations how could you prepare the following solutions: a) 750 mL of 0.172 F K,Cr,O, from the solid salt. b) 50 litres of a solution that is 0.1 F in Na,SO, from solid Na,SO4. c) 2 litres of a solution that is 0.015 M in Na* from solid NaCl. d) 20 litres of a solution that is 0.202 M in Na* from a 2.42 F solution of Na,SO4. 2- A solution of concentrated HCI has specific gravity of 1.185 and percentage is 36.5 % (w/w) HCl. Explain how 1.50 litres of approximately 0.3 F HCI should be prepared from the concentrated solution. 3- Describe the preparation of 400 mL of 6 F H;PO4 from the commercial solution which is 85% (w/w) H,PO4 and has density of 1.69 g/mL. 4- Describe the preparation of 200 mL of 3 F H,SO, from the concentrated solution which is 95% (w/w) H,SO, and has density of 1.84 g/mL. 5- Calculate the formal concentration of 12% (w/w) CuSO, solution which has density of 1.13 g/mL. 6- A solution was prepared by dissolving 1.68 g of K,Fe(CN), in water and diluting exactly to 500 mL. Calculate: a) the formal concentration of K,Fe(CN)6 . b) The molar concentration of K assuming complete dissociation. c) the weight-volume percent of K,Fe(CN), . d) the weight-weight percent of K,Fe(CN), if the density of solution = 1.008 g/mL. e) The number of moles Fe(CN), in 16 mL of the solution.
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