Postlaboratory Results And Discussionpart A
For each sample calculate the pHs and the other parameters requested.
|
WATER SAMPLE |
Ionic strength |
logical |
loglHCO,- |
Temp., K |
pKa2 |
PKsp |
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Sample A | ||||||
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Sample B | ||||||
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Sample C | ||||||
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Sample D | ||||||
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Sample E | ||||||
|
Sample F |
|
WATER SAMPLE |
pCa2+ |
pAlk |
PHS |
pH |
Langelier Index |
Ryznar Index |
|
Sample A | ||||||
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Sample B | ||||||
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Sample C | ||||||
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Sample D | ||||||
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Sample E | ||||||
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Sample F |
|
WATER SAMPLE |
Reaction quotient, Q |
A G° |
AG |
Driving Force Index, DFI |
|
Sample A | ||||
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Sample B | ||||
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Sample C | ||||
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Sample D | ||||
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Sample E | ||||
|
Sample F |
Based on the above results, state your conclusions with respect to the characteristics of the solutions analyzed and classify each one. Justify each answer, on the basis of the values calculated and those measured.
|
Has the solution |
What is the |
Classification |
Classification | |
|
reached |
tendency of |
according to |
according to | |
|
WATER SAMPLE |
equilibrium? |
the solution ? |
Langelier Index |
Ryznar Index |
|
Sample A | ||||
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Sample B | ||||
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Sample C | ||||
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Sample D | ||||
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Sample E | ||||
|
Sample F |
What are the differences between solutions A and B? What causes them?
What differences are observed among solutions A, C, and D? Is there a tendency with respect to the time elapsed since preparation?
What differences are noted between solutions A and E? What may have caused these differences?
According to your results, can the water source of Sample F be considered acceptable? Why?
How would the values change if the Langelier simplification of considering [Alk] = [HCOwere substituted for the true calculated value? How much would it affect the result? Which result is more reliable?
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