Given the following ground-water analysis at 25°C: Ca?+ 83.27 mg/L Mg?+ 24.32 mg/L Na+ K* So?- 23.45 mg/L HCO, 366.78 mg/L Cl" 12.50 mg/L +. 18.33 mg/L 2.34 mg/L pH = 7.8 TDS = 542 mg/L %3D (A) Convert all analyses into molal concentrations. (B) . Compute ionic strength. (C) Compute the activity coefficient for each ion.

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Chapter1: Chemical Foundations
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Given the following ground-water analysis at 25°C:
Ca?+ 83.27 mg/L
Mg?+ 24.32 mg/L
Na+
K*
So?- 23.45 mg/L
HCO, 366.78 mg/L
12.50 mg/L
18.33 mg/L
2.34 mg/L
pH = 7.8
TDS = 542 mg/L
%3D
(A) Convert all analyses into molal concentrations.
(B) . Compute ionic strength.
(C) Compute the activity coefficient for each ion.
(D) Find the activity of each ion.
(E) Convert analyses to meq/L.
(F) Do a cation-anion balance.
(G) Find the Kiap of anhydrite (CaSO4).
(H) Compare the Kjap of anhydrite with the Kgp of
Transcribed Image Text:Given the following ground-water analysis at 25°C: Ca?+ 83.27 mg/L Mg?+ 24.32 mg/L Na+ K* So?- 23.45 mg/L HCO, 366.78 mg/L 12.50 mg/L 18.33 mg/L 2.34 mg/L pH = 7.8 TDS = 542 mg/L %3D (A) Convert all analyses into molal concentrations. (B) . Compute ionic strength. (C) Compute the activity coefficient for each ion. (D) Find the activity of each ion. (E) Convert analyses to meq/L. (F) Do a cation-anion balance. (G) Find the Kiap of anhydrite (CaSO4). (H) Compare the Kjap of anhydrite with the Kgp of
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