A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG. • The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions º His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 2. cell n A B C 2 2 2 Explanation calculated quantities (Check the box next to any that are wrong.) AG 156. kJ/mol O 237. kJ/mol O -249. kJ/mol Check O K 2.14 x 10 41 3.32 x 10 4.20 x 10 43 O O O X E -0.81 V 1.23 V -1.29 V S ? O O tv Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 20
A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG. • The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions º His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 2. cell n A B C 2 2 2 Explanation calculated quantities (Check the box next to any that are wrong.) AG 156. kJ/mol O 237. kJ/mol O -249. kJ/mol Check O K 2.14 x 10 41 3.32 x 10 4.20 x 10 43 O O O X E -0.81 V 1.23 V -1.29 V S ? O O tv Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 20
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
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 133CWP: Consider a galvanic cell based on the following half-reactions: a. What is the expected cell...
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