1. The following oxidation and reduction half-reactions are possible for the electrolysis of potassium iodide solution. The solution contains water molecules, potassium ions (K*), and iodide ions (I-). 2H,O(1) O,(g) + 4H*(aq) + 4e- 2H,O(1) + 2e- → H,(g) + 20H(aq) K*(aq) + e- → K(s) 21-(aq) L(s) + 2e- a. What product was formed at the anode in the electrolysis of potassium iodide solution? Explain, citing specific evi- dence from your observations. b. What product was formed at the cathode in the electrolysis of potassium iodide solution? Explain based on your observations. c. Write the balanced chemical equation for the overall redox reaction in the electrolysis of aqueous potassium iodide. Hint: Remember to balance the electrons!

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1. The following oxidation and reduction half-reactions are possible for the electrolysis of potassium iodide solution. The
solution contains water molecules, potassium ions (K*), and iodide ions (I-).
2H,O(1)·
0,(g) + 4H*(aq) + 4e-
2H,0(1) + 2e- →
H,(g) + 20H (aq)
K*(aq) + e- →
K(s)
21-(aq)
L(s) + 2e-
a. What product was formed at the anode in the electrolysis of potassium iodide solution? Explain, citing specific evi-
dence from your observations.
b. What product was formed at the cathode in the electrolysis of potassium iodide solution? Explain based on your
observations.
c. Write the balanced chemical equation for the overall redox reaction in the electrolysis of aqueous potassium iodide.
Hint: Remember to balance the electrons!
Transcribed Image Text:1. The following oxidation and reduction half-reactions are possible for the electrolysis of potassium iodide solution. The solution contains water molecules, potassium ions (K*), and iodide ions (I-). 2H,O(1)· 0,(g) + 4H*(aq) + 4e- 2H,0(1) + 2e- → H,(g) + 20H (aq) K*(aq) + e- → K(s) 21-(aq) L(s) + 2e- a. What product was formed at the anode in the electrolysis of potassium iodide solution? Explain, citing specific evi- dence from your observations. b. What product was formed at the cathode in the electrolysis of potassium iodide solution? Explain based on your observations. c. Write the balanced chemical equation for the overall redox reaction in the electrolysis of aqueous potassium iodide. Hint: Remember to balance the electrons!
|Bubblinig Solatron Yhunel Dark soliol de pornted.
Data Table
Observations
Electrolyte
(Salt Solution)
Anode
Cathode
Yelloy subrtynce Jamed
Solidformed on eleprode
Sola hon termel flack oden shad isadled. pink
Bubbfing.
Solutio, humed
Potassium Iodide
Rpblig with oglor
Chlonne!. Tum fue
then Bubbling. Solutran Hemed
Sodium Chloride
KI and starch adoled.
pink.
Bubbling- Solatron Yeuanol Dayk soliol de posnted.
yellow! Stong odor.
Coloris neddish- browwn.
Copper(II) Bromide
Transcribed Image Text:|Bubblinig Solatron Yhunel Dark soliol de pornted. Data Table Observations Electrolyte (Salt Solution) Anode Cathode Yelloy subrtynce Jamed Solidformed on eleprode Sola hon termel flack oden shad isadled. pink Bubbfing. Solutio, humed Potassium Iodide Rpblig with oglor Chlonne!. Tum fue then Bubbling. Solutran Hemed Sodium Chloride KI and starch adoled. pink. Bubbling- Solatron Yeuanol Dayk soliol de posnted. yellow! Stong odor. Coloris neddish- browwn. Copper(II) Bromide
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