Chemistry Written Assignment 5.docx - Name: Sasha...

Name: Sasha Chevolleau
College ID:
Thomas Edison State University
General Chemistry I with Labs (CHE-121)
Section no.:
Semester and year: March 2019
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)
Electrolyte is a substance that conducts electricity when dissolved in water while a
Nonelectrolyte is a substance that does not.
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)
→
→
b. BaCl
2
+ ZnSO
4
→
(s)
- (aq)
c. (NH
4
)
2
CO
3
+ CaCl
2
→
(s)
1
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2NH
4
1+ (aq) + CO
3
2- (aq) + Ca 2+ (aq) + 2Cl 1- (aq) →
2NH
4
1+
(aq) + 2Cl
1-
(aq) + CaCO
3
(s)
d. NaNO
3
+ KCl →
NaNO
3
+ KCl → NaCl + KNO
3
Na
+
+ NO
3-
+ K
+
+ Cl
-
→ K
+
+ NO
3-
+ Na
+
+ Cl
-
The ionic net equation cancels out because both are soluble in water
(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)
(Reference: Chang 4.24)