PS-1. Bioenergetics In photosynthesis, the following processes are happening: - O2 + 4H* + 4e - CH2O + H2O 2H2O CO2 + 4H* + 4e - CO2 + H2O → CH2O+O2 Find the total expenditure of energy required in order to produce one molecule of CH2O from CO2 and H2O? standard redox potential of H2O - O2 pair is -0.82 V standard redox potential of CO2 - CH2O pair is -0.4 V

PS-1. Bioenergetics In photosynthesis, the following processes are happening: - O2 + 4H* + 4e - CH2O + H2O 2H2O CO2 + 4H* + 4e - CO2 + H2O → CH2O+O2 Find the total expenditure of energy required in order to produce one molecule of CH2O from CO2 and H2O? standard redox potential of H2O - O2 pair is -0.82 V standard redox potential of CO2 - CH2O pair is -0.4 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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Given the following reactions: Anode: NO3- + 2H+ + e- --> NO2 + H2O Cathode: 2H+ + 2e- --> H2 2NO2(g) + 2 H2O (I) --> 2NO3-(aq) + 2H+(aq) + Redox: H2(g) Conditions: [0.15 atm] [0.18 atm] [0.1 M] [0.67 atm] Find the pH, if E = - 0.70 V.
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Given the following reactions: Anode: NO3- + 2H+ + e- --> NO2 + H2O Cathode: 2H+ + 2e- --> H2 Redox: 2NO2(g) + 2 H2O (I) --> 2NO3-(aq) + 2H+(aq) + H2(g) Conditions: [0.15 atm] [0.18 atm] [0.1 M] [0.67 atm] Find the pH, if E = - 0.70 V. %3D
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An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. a. What is the potential of the cell at 25°C if the copper electrode is placed in a solution in which [Cu²+] = 5.9 x 10-4 M? Ecell = V b. The copper electrode is placed in a solution of unknown [Cu²+ ]. The measured potential at 25°C is 0.222 V. What is [Cu²+ ] ? (Assume Cu²+ is reduced.) [Cu²+] = M
8:51 AM Mon Dec 5 = S BIOL 286 E B Lecture Pow... Bb Lecture Pow... O ELECTROCHEMISTRY Recognizing consistency among equilibrium constant, free... cell A B 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. C Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number of significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 1. n 1 AA 1 1 Explanation 142. kJ/mol O calculated quantities (Check the box next to any that are wrong.) AG - 50. kJ/mol O - 46. kJ/mol O Check www-awu.aleks.com K 24 7.54 x 10 O…
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