2.12 Fundamental water quality parameters A municipal water supplier reported concentrations of inorganic contaminants in treated drinking water as shown in the following table. Ion Mass concentration (mg/L) Molarity (M) A13+ Ba2+ 0.10 3.7 x 106 0.09 × 10-6 38 x 10-6 2.5 x 10-6 113 x 10-6 0.08 × 10-6 0.36 x 10-6 0.04 x 10-6 72 x 10-6 0.06 × 10-6 245 × 106 74 x 10-6 15 x 10-6 200 × 10-6 570 x 10-6 0.012 F- NO, 0.72 0.155 CI 4 Cu2+ Fe2+ Mn2+ so,- Zn2+ 0.005 0.02 0.002 6.9 0.004 9.8 Mg2+ K* 1.8 0.6 Na+ 4.6 HCO,- 34.8 Problems 73 (a) List in order the three species that contribute the most to hardness. (b) Compute the total hardness associated with the three species listed in (a). (c) List in order the five species that contribute the most to ionic strength. (d) What is the total ionic strength caused by the five dominant species?
2.12 Fundamental water quality parameters A municipal water supplier reported concentrations of inorganic contaminants in treated drinking water as shown in the following table. Ion Mass concentration (mg/L) Molarity (M) A13+ Ba2+ 0.10 3.7 x 106 0.09 × 10-6 38 x 10-6 2.5 x 10-6 113 x 10-6 0.08 × 10-6 0.36 x 10-6 0.04 x 10-6 72 x 10-6 0.06 × 10-6 245 × 106 74 x 10-6 15 x 10-6 200 × 10-6 570 x 10-6 0.012 F- NO, 0.72 0.155 CI 4 Cu2+ Fe2+ Mn2+ so,- Zn2+ 0.005 0.02 0.002 6.9 0.004 9.8 Mg2+ K* 1.8 0.6 Na+ 4.6 HCO,- 34.8 Problems 73 (a) List in order the three species that contribute the most to hardness. (b) Compute the total hardness associated with the three species listed in (a). (c) List in order the five species that contribute the most to ionic strength. (d) What is the total ionic strength caused by the five dominant species?
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Chapter1: Chemical Foundations
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![2.12 Fundamental water quality parameters
A municipal water supplier reported concentrations of inorganic contaminants in
treated drinking water as shown in the following table.
Ion
Mass concentration (mg/L)
Molarity (M)
Al3+
Ba2+
0.10
3.7 x 10-6
0.09 x 10-6
38 x 10-6
2.5 x 10-6
113 x 10-6
0.08 x 106
0.36 × 10-6
0.04 x 10-6
72 x 10-6
0.06 × 10-6
245 x 10-6
74 x 10-6
15 x 10-6
200 x 106
570 x 106
0.012
F-
0.72
NO3
CI
Cu?+
Fe2+
Mn²+
0.155
4
0.005
0.02
0.002
So,-
Zn2+
Ca2+
Mg2+
K*
6.9
0.004
9.8
1.8
0.6
Na+
4.6
HCO3
34.8
Problems 73
(a) List in order the three species that contribute the most to hardness.
(b) Compute the total hardness associated with the three species listed in (a).
(c) List in order the five species that contribute the most to ionic strength.
(d) What is the total ionic strength caused by the five dominant species?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe4670242-8c25-4767-8dbf-fd6049c3ebc6%2F02478983-2a5e-4f0e-b573-76b122308579%2Fs95fpon_processed.png&w=3840&q=75)
Transcribed Image Text:2.12 Fundamental water quality parameters
A municipal water supplier reported concentrations of inorganic contaminants in
treated drinking water as shown in the following table.
Ion
Mass concentration (mg/L)
Molarity (M)
Al3+
Ba2+
0.10
3.7 x 10-6
0.09 x 10-6
38 x 10-6
2.5 x 10-6
113 x 10-6
0.08 x 106
0.36 × 10-6
0.04 x 10-6
72 x 10-6
0.06 × 10-6
245 x 10-6
74 x 10-6
15 x 10-6
200 x 106
570 x 106
0.012
F-
0.72
NO3
CI
Cu?+
Fe2+
Mn²+
0.155
4
0.005
0.02
0.002
So,-
Zn2+
Ca2+
Mg2+
K*
6.9
0.004
9.8
1.8
0.6
Na+
4.6
HCO3
34.8
Problems 73
(a) List in order the three species that contribute the most to hardness.
(b) Compute the total hardness associated with the three species listed in (a).
(c) List in order the five species that contribute the most to ionic strength.
(d) What is the total ionic strength caused by the five dominant species?
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