33 (a) At 20°C, what is the molar concentration of Ca²+ when calcite dissolution is at equilibrium with [CO³] = 10*M? (assuming activity equals concentration).
33 (a) At 20°C, what is the molar concentration of Ca²+ when calcite dissolution is at equilibrium with [CO³] = 10*M? (assuming activity equals concentration).
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
Related questions
Question
![7. Answer the questions based on the table below:
SOLUBILITY PRODUCTS FOR CALCITE AND
DOLOMITE IN PURE WATER AT 1 BAR
Temp (°C)
0
5
10
15
20
25
30
pKcal
8.340
8.345
8.355
8.370
8.385
8.400
8.510
Source: Freeze and Cherry (1979)
pk dol
16.56
16.63
16.71
16.79
16.89
17.00
17.90
pk dol
8.280
8.315
8.355
8.395
8.445
8.500
8.950
33
(a) At 20°C, what is the molar concentration of Ca²+ when
calcite dissolution is at equilibrium with [CO³] = 10°M?
(assuming activity equals concentration).
(b) Based on the table above, at 25°C, will calcite dissolve
or precipitate? Will dolomite dissolve or precipitate?
Explain your answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1a2be487-a4f1-4704-8a71-b11163658c73%2Fc1ae584c-4243-4e64-bfb7-de998bd5841c%2Fcpogixg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. Answer the questions based on the table below:
SOLUBILITY PRODUCTS FOR CALCITE AND
DOLOMITE IN PURE WATER AT 1 BAR
Temp (°C)
0
5
10
15
20
25
30
pKcal
8.340
8.345
8.355
8.370
8.385
8.400
8.510
Source: Freeze and Cherry (1979)
pk dol
16.56
16.63
16.71
16.79
16.89
17.00
17.90
pk dol
8.280
8.315
8.355
8.395
8.445
8.500
8.950
33
(a) At 20°C, what is the molar concentration of Ca²+ when
calcite dissolution is at equilibrium with [CO³] = 10°M?
(assuming activity equals concentration).
(b) Based on the table above, at 25°C, will calcite dissolve
or precipitate? Will dolomite dissolve or precipitate?
Explain your answer.
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