Chemistry, Loose-leaf Edition (8th Edition)
8th Edition
ISBN: 9780135210123
Author: Jill Kirsten Robinson, John E. McMurry, Robert C. Fay
Publisher: PEARSON
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Chapter 3, Problem 3.103SP
Interpretation Introduction
Interpretation:
The reason for the measurement of molecular mass to be highly accurate and precise in order to identify the molecular formula of molecules needs to be explained.
Concept introduction:
Ionization is the process by which a molecule or atom lose or gain electrons to form ions. The ion may get a positive and negative charge. The resulting electrical atom or charged molecule is called an ion. The mass spectrometer is used for determining molecular or the atomic weight of a compound.
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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 3 Solutions
Chemistry, Loose-leaf Edition (8th Edition)
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