Preparing for your ACS examination in general chemistry
98th Edition
ISBN: 9780970804204
Author: Lucy T Eubanks
Publisher: ACS DIVCHED EXAMINATIONS INST.
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Question
Chapter ER, Problem 3PQ
Interpretation Introduction
Interpretation:
The oxidation number of chromium in
Concept Introduction:
Oxidation number:
The oxidation of an atom is the charge that atom would have if the compound was composed of ions. The oxidation number of an atom depends on the other atoms in the substance. For example,
- In
- In
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3. Two solutions are prepared using the same solute:
Solution A: 0.14 g of the solute dissolves in 15.4 g of t-butanol
Solution B: 0.17 g of the solute dissolves in 12.7 g of cyclohexane
Which solution has the greatest freezing point change? Show calculations and explain.
2. Give the ground state electron configuration (e.g., 02s² σ*2s² П 2p²) for these molecules and deduce
its bond order.
Ground State Configuration
Bond Order
H2+
02-
N2
1. This experiment is more about understanding the colligative properties of a solution rather than the determination of
the molar mass of a solid.
a. Define colligative properties.
b. Which of the following solutes has the greatest effect on the colligative properties for a given mass of pure water?
Explain.
(i) 0.01 mol of CaCl2
(ii) 0.01 mol of KNO3
(iii) 0.01 mol of CO(NH2)2
(an electrolyte)
(an electrolyte)
(a nonelectrolyte)
Chapter ER Solutions
Preparing for your ACS examination in general chemistry
Ch. ER - Prob. 1PQCh. ER - Prob. 2PQCh. ER - Prob. 3PQCh. ER - Prob. 4PQCh. ER - Prob. 5PQCh. ER - Prob. 6PQCh. ER - Prob. 7PQCh. ER - Prob. 8PQCh. ER - Prob. 9PQCh. ER - Prob. 10PQ
Ch. ER - Prob. 11PQCh. ER - Prob. 12PQCh. ER - Prob. 13PQCh. ER - Prob. 14PQCh. ER - Prob. 15PQCh. ER - Prob. 16PQCh. ER - Prob. 17PQCh. ER - Prob. 18PQCh. ER - Prob. 19PQCh. ER - Prob. 20PQCh. ER - Prob. 21PQCh. ER - Prob. 22PQCh. ER - Prob. 23PQCh. ER - Prob. 24PQCh. ER - Prob. 25PQCh. ER - Prob. 26PQCh. ER - Prob. 27PQCh. ER - Prob. 29PQCh. ER - Prob. 30PQ
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