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(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
Given the following balanced equation for the combustion reaction of an unknown fuel: 4 Fuel (1)...
Given the following balanced equation for the combustion reaction of an unknown fuel: 4 Fuel (1) + 902(9) -> 8C02(g) + 10H 20(1) + AHørxn = -3857 kJ/mol 2N2(g) Given that AH°f{CO2(g)) = -393.5 kJ/mol and AH°f[H2001)) = -285.8 kJ/mol, calculate the enthalpy of formation of this fuel. Write answer to four significant figures. Numeric Response
2) On the standard galvanic cell schematic shown below, add labels for: (2 pts) A) Anode...
2) On the standard galvanic cell schematic shown below, add labels for: (2 pts) A) Anode B) Cathode C) Salt Bridge D) Show the direction of electron flow through the wire Equations and Constants: AG --FE E-Eº - (RT/nF)InQ R-8.3145 J/mol K F-96485 J/V mole (7 pts) 3) For the galvanic cell represented by Zn(s)Zn²+ (aq)|| Ag (aq)| Ag(s) Voltmeter A) Write the anode half reaction Zn(s) JAg(s) B) Write the cathode half reaction C) Write the net reduction-oxidation reaction...
(10 pornms) For the soltaic cell based on the above reaction, respond to the following The...
(10 pornms) For the soltaic cell based on the above reaction, respond to the following The shoot hand cell notation is The Zn electrode has a f+ OR- charge and is the (anode or cathode?) Write the half-reaction that occurs at the anode Write the half-reaction that occurs at the cathode Complete a sketch of Gibbs Free Energy vs. Reaction Coordinate the reaction Should ΔGo be (+) or (-) ? When the electrochemical cell reaches equilibrium, then AG should be...
the following reaction occurring in an electrochemical cell at 25°C. (The equation is balanced.) fone 2...
the following reaction occurring in an electrochemical cell at 25°C. (The equation is balanced.) fone 2 pts) a. Use the standard half-cell potentials listed below to calculate the standard cell potential (Eºcell) for 3 Sn(s) + 2 Fe* (aq) - 3 Sn2+ (aq) + 2 Fe(s) Sn 2(aq) + 2 e -Sn (s) E = -0.14 V Fe3+ (aq) + 3 e Fe(s) E° = -0.036 V A) -0.176 V B)-0.104 V C) +0.104 V D) +0.176 V b. Write...
20. rBr 10,Br (in hasic solution) Final equation: 21 Predict the boiling point (in K) of cyclohexane using this dat...
20. rBr 10,Br (in hasic solution) Final equation: 21 Predict the boiling point (in K) of cyclohexane using this data. (clearly show your work) Cyclohexane at its boiling point is described by the reactionCH..8 CHER-123 kJ/mol +298 J/mol-K Answer the next 5 questions with the following information: A voltaic cell is made with the metals Pb & Ag and the solutions Pb(NO)h& AgNO, at standard conditions 22. Write the half-steps for Oxidation: Reduction: 23. Write the balanced net ionic reaction:...
4. (20 pts) Given the following information: A fuel cell employs the reaction as 3A +...
4. (20 pts) Given the following information: A fuel cell employs the reaction as 3A + B → A3B. For each molecule of A:B, 3 electrons are circulated in the load. Assuming Ah; and s are temperature independent. Calculate the reversible cell voltage at 80 C (353 K). All the other conditions are at standard state. Chemical Species Ah(MJ/mol) fº [kJ/mol · K)] 60 200 | A₃B -450 300
10. Given that the AG for the hydrogen oxygen fuel cell reaction is -474.4 kJ/mol, calculate...
10. Given that the AG for the hydrogen oxygen fuel cell reaction is -474.4 kJ/mol, calculate the E' and K for this fuel cell at 25°C: 2 H2(g) + O2(g) → 2 H20 (1)
help with these please A voltaic cell is constructed in which the cathode is a standard...
help with these please
A voltaic cell is constructed in which the cathode is a standard hydrogen electrode and the anode is a hydrogen electrode PHlatm) immersed in a solution of unknown [H]. If the cell potential is 0.181 V, what is the pH of the unknown solution at 298 K? pH A voltaic cell is constructed in which the cathode is a standard hydrogen electrode and the anode is a hydrogen electrode PHlatm) immersed in a solution of unknown...
2. (10 pts) Combustion of coal is the main source of electricity in the world now....
2. (10 pts) Combustion of coal is the main source of electricity in the world now. Since coal is mostly made of carbon, the combustion process may be approximated by the following equation. C(s) + O2(g) CO2(g) (rxn 2) Its equilibrium constant at 25°C may be calculated from thermodynamic data as 1.25 x 1069 a) (2 pts) Does this value apply to Kp or Kor both? Explain briefly. b) (4 pts) If 1.00 mol of carbon is combined with 0.50...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
Given the following balanced equation for the combustion reaction of an unknown fuel: 4 Fuel (1) + 902(9) -> 8C02(g) + 10H 20(1) + AHørxn = -3857 kJ/mol 2N2(g) Given that AH°f{CO2(g)) = -393.5 kJ/mol and AH°f[H2001)) = -285.8 kJ/mol, calculate the enthalpy of formation of this fuel. Write answer to four significant figures. Numeric Response
2) On the standard galvanic cell schematic shown below, add labels for: (2 pts) A) Anode B) Cathode C) Salt Bridge D) Show the direction of electron flow through the wire Equations and Constants: AG --FE E-Eº - (RT/nF)InQ R-8.3145 J/mol K F-96485 J/V mole (7 pts) 3) For the galvanic cell represented by Zn(s)Zn²+ (aq)|| Ag (aq)| Ag(s) Voltmeter A) Write the anode half reaction Zn(s) JAg(s) B) Write the cathode half reaction C) Write the net reduction-oxidation reaction...
(10 pornms) For the soltaic cell based on the above reaction, respond to the following The shoot hand cell notation is The Zn electrode has a f+ OR- charge and is the (anode or cathode?) Write the half-reaction that occurs at the anode Write the half-reaction that occurs at the cathode Complete a sketch of Gibbs Free Energy vs. Reaction Coordinate the reaction Should ΔGo be (+) or (-) ? When the electrochemical cell reaches equilibrium, then AG should be...
the following reaction occurring in an electrochemical cell at 25°C. (The equation is balanced.) fone 2 pts) a. Use the standard half-cell potentials listed below to calculate the standard cell potential (Eºcell) for 3 Sn(s) + 2 Fe* (aq) - 3 Sn2+ (aq) + 2 Fe(s) Sn 2(aq) + 2 e -Sn (s) E = -0.14 V Fe3+ (aq) + 3 e Fe(s) E° = -0.036 V A) -0.176 V B)-0.104 V C) +0.104 V D) +0.176 V b. Write...
20. rBr 10,Br (in hasic solution) Final equation: 21 Predict the boiling point (in K) of cyclohexane using this data. (clearly show your work) Cyclohexane at its boiling point is described by the reactionCH..8 CHER-123 kJ/mol +298 J/mol-K Answer the next 5 questions with the following information: A voltaic cell is made with the metals Pb & Ag and the solutions Pb(NO)h& AgNO, at standard conditions 22. Write the half-steps for Oxidation: Reduction: 23. Write the balanced net ionic reaction:...
4. (20 pts) Given the following information: A fuel cell employs the reaction as 3A + B → A3B. For each molecule of A:B, 3 electrons are circulated in the load. Assuming Ah; and s are temperature independent. Calculate the reversible cell voltage at 80 C (353 K). All the other conditions are at standard state. Chemical Species Ah(MJ/mol) fº [kJ/mol · K)] 60 200 | A₃B -450 300
10. Given that the AG for the hydrogen oxygen fuel cell reaction is -474.4 kJ/mol, calculate the E' and K for this fuel cell at 25°C: 2 H2(g) + O2(g) → 2 H20 (1)
help with these please
A voltaic cell is constructed in which the cathode is a standard hydrogen electrode and the anode is a hydrogen electrode PHlatm) immersed in a solution of unknown [H]. If the cell potential is 0.181 V, what is the pH of the unknown solution at 298 K? pH A voltaic cell is constructed in which the cathode is a standard hydrogen electrode and the anode is a hydrogen electrode PHlatm) immersed in a solution of unknown...
2. (10 pts) Combustion of coal is the main source of electricity in the world now. Since coal is mostly made of carbon, the combustion process may be approximated by the following equation. C(s) + O2(g) CO2(g) (rxn 2) Its equilibrium constant at 25°C may be calculated from thermodynamic data as 1.25 x 1069 a) (2 pts) Does this value apply to Kp or Kor both? Explain briefly. b) (4 pts) If 1.00 mol of carbon is combined with 0.50...
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