V25.0125 Homework Answers - Chap. 4

Chapter 4

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.

  • 5) Consult recitation instructor.

  • 21) (a) 2.202 mol, (b) 3.09X10-2 mol, (c) 4.31X10-3 mol

  • 23) (a) 66.4 mL, (b) 7.2X1025 Cu+2 ions, (c) 0.491 M

  • 27) (a) 0.15 mol Mg+2, 9.3X1022 Mg+2 ions, 0.31 mol Cl-, 1.9X1023 Cl- ions, (b) 4.1X10-4 mol Al+3, 2.5X1020 Al+3 ions, 6.2X10-4 mol SO4-2, 3.7X1020 SO4-2 ions, (c) 0.0242 mol Cs+, 1.46X1022 Cs+ ions, 0.0242 mol NO3-, 1.46X1022 NO3- ions

  • 31) (a) 0.0183 mol/mL, (b) 97.5 %

  • 34) (a) [Na+] = 0.470 M, [Cl-] = 0.5530 M, [Mg+2] = 0.0544 M, [SO4-2] = 0.0285 M, [Ca+2] = 0.0111 M, [K+] = 0.0144 M, [HCO3-] = 3.84X10-3 M, [Br-] = 9.8X10-4 M, (b) 0.484 M, (c) 0.0654 M, (d) 0.586 M

  • 48) 0.235 M

  • 56) (a) Consult recitation instructor, (b) 2.57 g

  • 62) Consult recitation instructor.

  • 66) Consult recitation instructor.

  • 72) 0.09713 M

  • 89) Consult recitation instructor.

  • 91) Consult recitation instructor.

  • 95) Consult recitation instructor.

  • 97) 0.1739 %

  • 118) 60.7 %

  • 126) (a) 61.7 %, (b) 3.64 mol H2, 0.274 mol N2

  • 148) (a) 0.0146 M, (b) 2.8X10-4 mol

  • 150) (a) Consult recitation instructor, (b) 1.0X101 g, (c) Consult recitation instructor.

  • 152) (a) 19:1, (b) 3.0X101:1, (c) 61.1077 %