EBK WEBASSIGN FOR ZUMDAHL'S CHEMICAL PR
8th Edition
ISBN: 9780357119099
Author: ZUMDAHL
Publisher: VST
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Chapter 9, Problem 111AE
Interpretation Introduction
Interpretation:
The amount of heat released when 54.0 g of diborane is combusted needs to be deduced
Concept Introduction:
Combustion involves reaction between a combustible material and an oxidizer like oxygen to produce carbon dioxide (CO2) and water (H2O)
These are exothermic reactions, i.e., they are accompanied by the release of heat.
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3. Arrange the different acids in Exercise B # 2 from the strongest (1) to the weakest acid
(10).
1.
2.
(strongest)
3.
4.
5.
6.
7.
8.
9.
10
10.
(weakest)
Name
Section
Score
Date
EXERCISE B
pH, pOH, pка, AND PKD CALCULATIONS
1. Complete the following table.
Solution
[H+]
[OH-]
PH
РОН
Nature of Solution
A
2 x 10-8 M
B
1 x 10-7 M
C
D
12.3
6.8
2. The following table contains the names, formulas, ka or pka for some common acids. Fill
in the blanks in the table. (17 Points)
Acid Name
Formula
Dissociation reaction
Ka
pka
Phosphoric acid
H₂PO₁
H3PO4
H++ H₂PO
7.08 x 10-3
Dihydrogen
H₂PO
H₂PO
H+ HPO
6.31 x 10-6
phosphate
Hydrogen
HPO₁
12.4
phosphate
Carbonic acid
H2CO3
Hydrogen
HCO
6.35
10.3
carbonate or
bicarbonate
Acetic acid
CH,COOH
4.76
Lactic acid
CH₂CHOH-
COOH
1.38 x 10
Ammonium
NH
5.63 x 10-10
Phenol
CH₂OH
1 x 10-10
Protonated form
CH3NH3*
3.16 x 10-11
of methylamine
Indicate whether it is true that Co(III) complexes are very stable.
Chapter 9 Solutions
EBK WEBASSIGN FOR ZUMDAHL'S CHEMICAL PR
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