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114. One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH;CH,OH(g) + 4 OH (aq) - HC,H;O;(g) + 3 H2O(1) + 4 e ethyl alcohol acetic acid At the cathode, oxygen is reduced: 0,(g) + 2 H,O(1) + 4 e 4 OH (aq) The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 188 mL of his breath through this breathalyzer, the breathalyzer produces an average of 324 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 25°C what percent (by volume) of the driver's breath is ethanol?

114. One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH;CH,OH(g) + 4 OH (aq) - HC,H;O;(g) + 3 H2O(1) + 4 e ethyl alcohol acetic acid At the cathode, oxygen is reduced: 0,(g) + 2 H,O(1) + 4 e 4 OH (aq) The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 188 mL of his breath through this breathalyzer, the breathalyzer produces an average of 324 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 25°C what percent (by volume) of the driver's breath is ethanol?

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 18.103QE
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114. One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH;CH,OH(g) + 4 OH (aq) - HC,H;O;(g) + 3 H2O(1) + 4 e ethyl alcohol acetic acid At the cathode, oxygen is reduced: 0,(g) + 2 H,O(1) + 4 e 4 OH (aq) The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 188 mL of his breath through this breathalyzer, the breathalyzer produces an average of 324 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 25°C what percent (by volume) of the driver's breath is ethanol?
Transcribed Image Text:114. One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH;CH,OH(g) + 4 OH (aq) - HC,H;O;(g) + 3 H2O(1) + 4 e ethyl alcohol acetic acid At the cathode, oxygen is reduced: 0,(g) + 2 H,O(1) + 4 e 4 OH (aq) The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 188 mL of his breath through this breathalyzer, the breathalyzer produces an average of 324 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 25°C what percent (by volume) of the driver's breath is ethanol?
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