15:37 Sun May 2Done <AAA session.masteringchemistry.com

From given V = 191 mL of breath, I = 329 mA, t = 10 s Total charge used = I*t = (329*10^-3)(10) =…

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: Part A CH3 CH2 OH(g) + 4 OH (aq) → HC, H3 O2 (9) + 3 H2O(1) + 4e At the cathode, oxygen is reduced: O2 (g) + 2H2O(1) + 4e 4 OH (aq) Assuming a pressure of 1.0 atm and a temperature of 25 °C, what percent (by volum driver's breath is ethanol? The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 191 mL of his breath through this breathalyzer, the breathalyzer produces an average of 329 mA of current for Express your answer using two significant figures. 10 s. % Submit Request Answer Provide Feedback

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: Part A CH3 CH2 OH(g) + 4 OH (aq) → HC, H3 O2 (9) + 3 H2O(1) + 4e At the cathode, oxygen is reduced: O2 (g) + 2H2O(1) + 4e 4 OH (aq) Assuming a pressure of 1.0 atm and a temperature of 25 °C, what percent (by volum driver's breath is ethanol? The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 191 mL of his breath through this breathalyzer, the breathalyzer produces an average of 329 mA of current for Express your answer using two significant figures. 10 s. % Submit Request Answer Provide Feedback

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Calculate the mass of chlorine in grams that can be produced by the electrolysis of 50.0 kg of sodium chloride in concentrated aqueous solution. NaCl(aq) + H2O(l) ⟹ ⟹ NaOH(aq)+ Cl2 (g)+ H2 (g)
A certain metal M forms a soluble nitrate salt MNO3. Suppose the left half cell of a galvanic cell apparatus is filled with a 225. mM solution of MNO3 and the right half cell with a 4.50 M solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 35.0 °C. x10 Which electrode will be positive? left right X Ś ? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. 0 Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.
A certain metal M forms a soluble nitrate salt MNO3. Suppose the left half cell of a galvanic cell apparatus is filled with a 175. mM solution of MNO3 and the right half cell with a 3.50 M solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 35.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. 0 Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. left right ■ □x10 X S
When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(II) sulfate (PbSO4) is reduced to lead at the cathode and oxidized to solid lead(II) oxide (PbO) at the anode. Suppose a current of 80.0 A is fed into a car battery for 63.0 seconds. Calculate the mass of lead deposited on the cathode of the battery. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. x10 0.0 X μ 010 3
A voltaic cell (also called a galvanic cell) was constructed by connecting two beakers with a salt bridge. In one beaker, an iron plate was immersed in a 1 M solution of iron(II) nitrate, Fe(NO3)2. In the other beaker, a lead plate was immersed in a 1 M solution of lead(II) nitrate, Pb(NO3)2. What voltage is generated by this cell under standard conditions at 25 oC? Note the following standard half-cell reduction potentials:Fe2+(aq) + 2e- -----> Fe(s) Eo = -0.45 VPb2+(aq) + 2e- -----> Pb(s) Eo = -0.13 V In the voltaic cell described previously, which consists of iron and lead plates, each immersed in a 1 M solution of their respective ions, which beaker contains the anode? Group of answer choices The beaker with the lead plate. The beaker with the iron plate. Consider again, the voltaic cell described previously, that consists of iron and lead plates, each immersed in a 1 M solution of their respective ions. Based on the standard cell voltage that…
Given the following half-reactions, 2 103 (aq) + 12H*(aq) + 10 e → 12(s) + 6H2O Fe2* (aq) → Fe3* (aq) + e" write the balanced overall reaction. 2103 - (aq) + 12 H* (aq) + Fe 2* (aq) → Fel2 (s) + 6 H2O o 2 103 (aq) + 10 Fe²* (aq) → l2 (s) + 10 Fe³+ (aq) 2 103 - (aq) + 12 H* (aq) + Fe 2* (aq) → 12 (s) + Fe3+ (aq) + 6 H20 2 103 - (aq) + 12 H* (aq) + 10 Fe 2* (aq) → 12 (s) + 10 Fe3+ (aq) + 6 H20
During recharge the following reactions occur in the lead-acid battery. Cathode: PbSO4 (s) + 2e− → Pb(s) + SO42−(aq) Anode: PbSO4 (s) + 2H2O → PbO2 (s) + SO42−(aq)+ 4H+ + 2e− What are the lead-containing reactant(s) consumed during recharging of this battery? Group of answer choices Pb (s) only PbO2 (s) only PbSO4 (s) only both PbO2 (s) and PbSO4 (s) both Pb (s) and PbO2 (s)
Complete and balance the following redox equation in basic solution. Br2(l) + Al(OH)4–(aq) ⟶ Br–(aq) + AlO42–(aq)
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?
Help with the following question Please round the answer to 3 sig figs
Write balanced half-reactions for the following redox reaction: 2 CO₂(g) +12H* (aq) +121 (aq) reduction: oxidation: 0 1 C₂H₂OH()+3 H₂O(1)+61₂(s) 0-0 Op
Part A When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as Ag+, the flow of electrons will reduce the silver ion, causing solid silver to plate onto the electrode. The amount of What mass of Cu(s) is electroplated by running 17.5 A of current through a Cu2(aq) solution for 4.00 h? metal plated depends on the number of electrons passed. The total charge of a mole of electrons is 96,485 coulombs (C) and Express your answer to three significant figures and include the appropriate units. 1 ampere (A) =1 coulomb/second (C/s) Templates Symbols uado redo reset keyboard shortcuts help, Value Units Submit Request Answer Part B How many minutes will it take to electroplate 22.1 g of gold by running 5.00 A of current through a solution of AuT(aq)? Express your answer to three significant figures and include the appropriate units. Templates Symbols uado redo reset keyboard…