CHEM-UA 126 Homework Answers - Chap. 19

Chapter 19

Homework Answers

Note: For some problems, giving the answers would inhibit your thinking through to the solution. In such cases, the phrase "Consult recitation instructor" has been given in place of the answer.

You must show work leading to your results in order to receive credit for homework assignments.



  • 13) 7.4X10-5 M, 4.13

  • 23) (a) 6.3X10-8, (b) 7.10

  • 29) 8.86

  • 33) (a) 10.20, (b) 1.5X10-3 g

  • 37) Consult recitation instructor.

  • 50) (a) 13.0000, (b) 12.5229, (c) 11.2291, (d) 10.2226, (e) 7.0000, (f) 3.7789, (g) 1.8451

  • 52) (a) 11.86, (b) 10.72, (c) 10.24, (d) 9.44, (e) 8.14, (f) 6.01, (g) 3.9036, (h) 1.9542

  • 60) Consult recitation instructor.

  • 72) 6.2X10-5

  • 76) (a) 1.4X10-5 mol/L, (b) 1.4X10-7 mol/L

  • 88) Consult recitation instructor.

  • 101) 8.5X10-6 M

  • 105) 2.9X10-7 M, 0.037 M, 0.071 M

  • 107) 39 mL, 61 mL

  • 120) (a) Consult recitation instructor, (b) 1X103, (c) Consult recitation instructor, (d) Consult recitation instructor.

  • 122) 0.014 g/L, 3.1X10-5 g/L

  • 129) (a) [H+] = 4.8X10-8 M, [OH-] = 2.1X10-7 M, [Na+] = 0.10 M, [ClO-] = 0.10 M, [HClO] = 0.16 M, (b) 7.32, (c) 7.25

  • 138) (a) 1.88, (b) 57.11 mL, (c) 5.22, (d) 8.07, (e) 10.92

  • 140) (a) Consult recitation instructor, (b) Consult recitation instructor, (c) 6.3X10-3 M

  • 142) (a) HCO3-, Consult recitation instructor, (b) 0.01, 1X102, (c) Consult recitation instructor.