Name: John Hendrie College ID: 0571667 Thomas Edison State University General Chemistry I with Labs (CHE-121) Section no.: 010 Semester and year: Jan2018 Written Assignment 5: Chemical Reactions in Solution Answer all assigned questions and problems, and show all work. 1. Define electrolyte and nonelectrolyte and identify each of the following substances as a strong electrolyte, weak electrolyte, or nonelectrolyte: (5 points) a. H 2 O weak electrolyte b. KCl strong electrolyte c. HNO 3 strong electrolyte d. CH 3 COOH weak electrolyte e. C 12 H 22 O 11 non electrolyte (Reference: Chang 4.9) 2. Write ionic and net ionic equations for the following reactions: (8 points) a. AgNO 3 + Na 2 SO 4 → 2AgNO3 (aq) + Na2SO4 (aq) → 2 NaNO3 (aq) + Ag2SO4 (s) Ionic equation: 2Ag + NO3 + Na2 +SO4 2Na + NO3 + Ag2SO4 Net ionic equation: 2Ag + (aq)+ SO -2 4(aq) Ag2SO4(s) b. BaCl 2 + ZnSO 4 → BaCl2 + ZnSO4 BaSO4 + ZnCl2 Ionic equation: Ba + Cl2 + Zn + SO4 BaSO4 + Zn + Cl2 Net Ionic equation: Ba 2+ + SO 2- 4 BaSO4 c. (NH 4 ) 2 CO 3 + CaCl 2 → (NH4)2CO3 + CaCl2 2(NH4)Cl + CaCO3 Ionic Equation: 2NH4 + (aq) +CO3 2-(aq)+Ca 2+ (aq) + 2Cl-(aq) → CaCO3 (s)+ 2NH4 + (aq) +2Cl-(aq) Net ionic equation: CO 3 2-(aq) +Ca 2+ (aq) → CaCO 3 (s) d. NaNO 3 + KCl → KCl + NaNO 3 → KNO 3 + NaCl Ionic equation: K + + Cl- + Na+ + NO3-→ NO3-+ Na+ + Cl- 1 Copyright © 2017 by Thomas Edison State University . All rights reserved.
Net ionic equation: They are all spectators, so they cancel each other out. (Reference: Chang 4.21) 3. With reference to Table 4.2, suggest one method by which you might separate (a) K + from Ag + , (b) Ba 2+ from Pb 2+ , (c) NH 4 + from Ca 2+ , and (d) Ba 2+ from Cu 2+ . All cations are assumed to be in aqueous solution, and the common anion is the nitrate ion. (8 points) A. Add NaCl, B. add NaF C. add Na2Co3 D.add Na2SO4 (Reference: Chang 4.24) 4.
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