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Author Question: When suspected drunk drivers are tested with a Breathalyzer, the alcohol (ethanol) in the exhaled ... (Read 89 times)

skymedlock

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on: Feb 15, 2020
When suspected drunk drivers are tested with a Breathalyzer, the alcohol (ethanol) in the exhaled breath is oxidized to acetic acid with an acidic solution of potassium dichromate:

3CH3CH2OH(aq) + 2Cr2O7-2 (aq) + 16H+(aq)  3CH3CO2H(aq) + 4Cr+3(aq) + 11H2O (l)


If Eº for this cell is 1.30V and the standard half-cell potential of Cr2O7-2(aq) to Cr+3 is 1.358 V, what is the standard half-cell reduction potential for the conversion of acetic acid to ethanol?
◦ 2.658 V
◦ -0.058 V
◦ -2.658 V
◦ + 0.058 V
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by skymedlock on Feb 15, 2020

ankilker

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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skymedlock

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Reply 2 on: Feb 15, 2020
Gracias!

Jossy

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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