The data shown below are Fe(II) concentrations observed at two different depths over an incubation period.  They illustrate Fe(II) oxidation in the sediments that were incubated. a) Please calculate the first-order rate constants for Fe(II) oxidation at those two depths. b) please provide the half-life for dissolved Fe(II).

Fundamentals Of Analytical Chemistry
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Author:Skoog
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Chapter30: Kinetic Methods Of Analysis
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The data shown below are Fe(II) concentrations observed at two different depths over an incubation period.  They illustrate Fe(II) oxidation in the sediments that were incubated.

a) Please calculate the first-order rate constants for Fe(II) oxidation at those two depths.
b) please provide the half-life for dissolved Fe(II).

Time (d)
Fe(I) (mM) 0 сm
Fe(II) (mM) 45 cm
0.00
13.63
7.39
4.00
2.71
8.04
7.00
0.40
6.97
11.00
0.05
3.93
14.00
0.37
1.66
21.00
0.43
0.59
28.00
0.28
0.37
Transcribed Image Text:Time (d) Fe(I) (mM) 0 сm Fe(II) (mM) 45 cm 0.00 13.63 7.39 4.00 2.71 8.04 7.00 0.40 6.97 11.00 0.05 3.93 14.00 0.37 1.66 21.00 0.43 0.59 28.00 0.28 0.37
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