3 1-(aq) + S20g²-(aq) → I3-(aq) + 2 SO4²-(aq) Iodide ion, I-(aq), reacts with peroxydisulfate ion, S2082-(aq), according to the equation above. Assume that the reaction goes to completion. a. Identify the type of reaction (combustion, disproportionation, neutralization, oxidation-reduction, precipitation, etc.) represented by the equation above. Also, give the formula of another substance that could convert I-(aq) to I3-(aq).

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Chapter1: Chemical Foundations
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can you please solve part A

3 I-(aq) + S2Og²-(aq) → I3-(aq) + 2 SO4²-(aq)
Iodide ion, I-(aq), reacts with peroxydisulfate
ion, S20g²-(aq), according to the equation
above. Assume that the reaction goes to
completion.
a. Identify the type of reaction
(combustion, disproportionation,
neutralization, oxidation-reduction,
precipitation, etc.) represented by the
equation above. Also, give the formula
of another substance that could
convert I-(aq) to I3-(aq).
b. In an experiment, equal volumes of
0.0120 M I-(aq) and 0.0040 M S2Og²-
(aq) are mixed at 25°C. The
concentration of I3-(aq) over the
following 80 minutes is shown in the
graph below.
0.0030
E 0.0020
0.0010
10
20
30
40
50
60
70
80
Time (minutes)
(i) Indicate the time at which the
reaction first reaches completion
by marking an “X" on the curve
above at the point that
corresponds to this time. Explain
your reasoning.
(ii) Explain how to determine the
instantaneous rate of formation of
I3-(aq) at exactly 20 minutes. Draw
on the graph above as part of your
explanation.
Transcribed Image Text:3 I-(aq) + S2Og²-(aq) → I3-(aq) + 2 SO4²-(aq) Iodide ion, I-(aq), reacts with peroxydisulfate ion, S20g²-(aq), according to the equation above. Assume that the reaction goes to completion. a. Identify the type of reaction (combustion, disproportionation, neutralization, oxidation-reduction, precipitation, etc.) represented by the equation above. Also, give the formula of another substance that could convert I-(aq) to I3-(aq). b. In an experiment, equal volumes of 0.0120 M I-(aq) and 0.0040 M S2Og²- (aq) are mixed at 25°C. The concentration of I3-(aq) over the following 80 minutes is shown in the graph below. 0.0030 E 0.0020 0.0010 10 20 30 40 50 60 70 80 Time (minutes) (i) Indicate the time at which the reaction first reaches completion by marking an “X" on the curve above at the point that corresponds to this time. Explain your reasoning. (ii) Explain how to determine the instantaneous rate of formation of I3-(aq) at exactly 20 minutes. Draw on the graph above as part of your explanation.
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