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8. The density of methanolc acid, HCOOH Is 1.22 g/mL If 33.5 mL of methanoic acid is dissolved in water to a volume of 250 ml, calculate the concontration of methanolc acid in a) % v/v b) % wv

8. The density of methanolc acid, HCOOH Is 1.22 g/mL If 33.5 mL of methanoic acid is dissolved in water to a volume of 250 ml, calculate the concontration of methanolc acid in a) % v/v b) % wv

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 4ALQ: ou have two solutions containing solute A. To determine which solution has the highest concentration...
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8. The density of methenolc acid, HCOOH is 1.22 g/mL If 33.5 ml of methanoic acid is dissolved in water to a volume of 250 ml, calculate the concentration of methanoic acid in a) % v/v b) % wv 9. Calculate the molar concentration of HlyOs in a solution that has a specific gravity of 1.42 and is 70.5% HNO. (w/w). 10. A 12.5% (w/w) NICI2 (129.61 g/mol) solution has a density of 1.149 g/mL. Calculate a) The molar concentration of NiCl, in the solution. b) The molar Cl concentration of the solution. 11. Calculate the molar concentration of HPO, commercial reagent that is 86% (w/w) and has a specific gravity of 1.71. 12. The density of commercial concentrated HNO, is 1.41 g/mL The concentrated acid contains 69% (w/w of pure acid. Determine a) Molarity of the commercial concentrated acid. b) Volume in mL of concentrated acid is needed to prepare 500 mL of 2.50 M HNO, solution. 13. Describe the preparation of solution: a). 500 mL 0.250 M ethylene glycol (MW = 62.07) from a concentrated 31 % (w/w) solution that has a density of 1.0350 g/mL b) 2.00 L of 0.108 M BaCl, from BaCl.2HOsall. c) 750 mL of 6.00 M HPO. from the commercial reagent that is 86% H,PO. (w/w) and has specific gravity of 1.71. d) 250 mL of 0.0750 M AGNO, from the solid reagent. e) 500 mL of 4.75 % (w/v) aqueous ethanol. 250 ml solution of 25 ppm of Na". from solid sodium sulfate (Na,SO.)
Transcribed Image Text:8. The density of methenolc acid, HCOOH is 1.22 g/mL If 33.5 ml of methanoic acid is dissolved in water to a volume of 250 ml, calculate the concentration of methanoic acid in a) % v/v b) % wv 9. Calculate the molar concentration of HlyOs in a solution that has a specific gravity of 1.42 and is 70.5% HNO. (w/w). 10. A 12.5% (w/w) NICI2 (129.61 g/mol) solution has a density of 1.149 g/mL. Calculate a) The molar concentration of NiCl, in the solution. b) The molar Cl concentration of the solution. 11. Calculate the molar concentration of HPO, commercial reagent that is 86% (w/w) and has a specific gravity of 1.71. 12. The density of commercial concentrated HNO, is 1.41 g/mL The concentrated acid contains 69% (w/w of pure acid. Determine a) Molarity of the commercial concentrated acid. b) Volume in mL of concentrated acid is needed to prepare 500 mL of 2.50 M HNO, solution. 13. Describe the preparation of solution: a). 500 mL 0.250 M ethylene glycol (MW = 62.07) from a concentrated 31 % (w/w) solution that has a density of 1.0350 g/mL b) 2.00 L of 0.108 M BaCl, from BaCl.2HOsall. c) 750 mL of 6.00 M HPO. from the commercial reagent that is 86% H,PO. (w/w) and has specific gravity of 1.71. d) 250 mL of 0.0750 M AGNO, from the solid reagent. e) 500 mL of 4.75 % (w/v) aqueous ethanol. 250 ml solution of 25 ppm of Na". from solid sodium sulfate (Na,SO.)
4. What is the mass in millgrams of solute in: a) 500 mmol of MgO. b) 2.92 L of 4.76 x 10 M H2O2 c) 3.50 L of a solution that contains 21.7 ppm of SnCl2 d) 587 mL of a solution contains 3.74 ppm of Pb(NOs)2. 5. Calculate mass in grams of solute in: a) 450 mL of 0.164 M KNO3 b) 27.0 mL of 8.75 x 104 M benzoic acid (122 g/mol). 6. A solution contains 118.5 g Kl per liter solution. Calculate the concentration in a) % w/v b) % w/w Given the density of the solution at 25 °C is 1.078 g/mL. 7. Methanol, CH3OH (32.0 g/mol) has a density of 0.79 g/mL. If 54.0 mL methanol is added with water to a volume of 500.0 mL, calculate the concentration of the methanol solution in a) percent v/v b) percent w/v c) molarity
Transcribed Image Text:4. What is the mass in millgrams of solute in: a) 500 mmol of MgO. b) 2.92 L of 4.76 x 10 M H2O2 c) 3.50 L of a solution that contains 21.7 ppm of SnCl2 d) 587 mL of a solution contains 3.74 ppm of Pb(NOs)2. 5. Calculate mass in grams of solute in: a) 450 mL of 0.164 M KNO3 b) 27.0 mL of 8.75 x 104 M benzoic acid (122 g/mol). 6. A solution contains 118.5 g Kl per liter solution. Calculate the concentration in a) % w/v b) % w/w Given the density of the solution at 25 °C is 1.078 g/mL. 7. Methanol, CH3OH (32.0 g/mol) has a density of 0.79 g/mL. If 54.0 mL methanol is added with water to a volume of 500.0 mL, calculate the concentration of the methanol solution in a) percent v/v b) percent w/v c) molarity
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