A breathanalyzer is a device to measure alcohol content from a breath sample. The ethanol (C2H6O) in exhaled breath reacts with a reddish orangesolution of dichromate ions to form acetic acid (C2H4O2) and the solution turns greendue to Cr3+. a) Balance the redox equation (in acidic solutionusing the method of half reactions)and identify the cathode and anode reactions. C2H6O(g)+ Cr2O72-(g)→C2H4O2(aq)+ Cr3+ b) Calculate the standard cell potential cell(E° )and the equilibrium constant K(express as a power of e)for the reaction at 25°C.The standard reductionpotential for the conversion of acetic acid to ethanol is +0.06 V.
A breathanalyzer is a device to measure alcohol content from a breath sample. The ethanol (C2H6O) in exhaled breath reacts with a reddish orangesolution of dichromate ions to form acetic acid (C2H4O2) and the solution turns greendue to Cr3+. a) Balance the redox equation (in acidic solutionusing the method of half reactions)and identify the cathode and anode reactions. C2H6O(g)+ Cr2O72-(g)→C2H4O2(aq)+ Cr3+ b) Calculate the standard cell potential cell(E° )and the equilibrium constant K(express as a power of e)for the reaction at 25°C.The standard reductionpotential for the conversion of acetic acid to ethanol is +0.06 V.
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...
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A breathanalyzer is a device to measure alcohol content from a breath sample. The ethanol (C2H6O) in exhaled breath reacts with a reddish orangesolution of dichromate ions to form acetic acid (C2H4O2) and the solution turns greendue to Cr3+.
a) Balance the redox equation (in acidic solutionusing the method of half reactions)and identify the cathode and anode reactions.
C2H6O(g)+ Cr2O72-(g)→C2H4O2(aq)+ Cr3+
b) Calculate the standard cell potential cell(E° )and the equilibrium constant K(express as a power of e)for the reaction at 25°C.The standard reductionpotential for the conversion of acetic acid to ethanol is +0.06 V.
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