. Use the following half reactions to answer questions about the corrosion of iron: Fe3O4 (s)→Fe2O3...
. Use the following half reactions to answer questions about the corrosion of iron:
Fe3O4 (s)→Fe2O3 s H aq+O2 g→H2O (l)
A. (5 pts) Balance the two half reactions and combine to form a balanced overall equation.
B. (5 pts) Using your overall balanced equation, determine the Gibbs free energy of the reaction at 25°C.
C. (5 pts) Determine the Cell potential of this reaction. (Hint: You can use Gibbs)
D. (5 pts) Determine the Equilibrium constant for this reaction at 25°C.
Homework Answers
Add Answer to:
. Use the following half reactions to answer questions about the
corrosion of iron:
Fe3O4
(s)→Fe2O3...
3. Write the electrochemical half-cell reactions for oxidation and reduction during uniform corrosion in the following:...
3. Write the electrochemical half-cell reactions for oxidation and reduction during uniform corrosion in the following: (Also indicate if corrosion is possible) a. Corrosion of Aluminum in air free sulfuric acid (i.e., No oxygen in the solution) b. Iron in air free acid ferric sulfate solution (assume no O2 in the solution) Hint Fe3+ to Fe reaction is possible due to the presence of the ferric ions c. Carbon steel in aerated seawater (With O2 in the solution) d. Zinc...
please answer all questions for rate. thank you :) For the following equation: MnO4 (aq) +...
please answer all questions for rate. thank you :)
For the following equation: MnO4 (aq) + Ca(s) → MnO2(s) + Ca?*(aq) Standard Reduction Potential values: Mno. MnO2 = 1.68 V Ca? / Ca = -2.76 V (1) Write balanced half-reaction equations for oxidation and reduction (2) Write the balanced equation for the overall redox reaction (3) Use the two balanced half-reactions and standard reduction potential values to construct a spontaneous galvanic cell, and write the cell notation for the galvanic...
Corrosion Problem: Electrode Electrode Pb (s) PbCh (s) HCl (aqueous) AgCI (s)Ag (s) The emf of...
Corrosion Problem: Electrode Electrode Pb (s) PbCh (s) HCl (aqueous) AgCI (s)Ag (s) The emf of the cell represented in the accompanying diagram is 0.490 V at 25°C and the temperature coefficient is-1.84 × 10-4 VpC. All the compo- nents are present as pure solids in contact with an HCl electrolyte. (a) Write the half-cell reactions. (b) Write the overall cell reaction (c) Calculate the Gibbs free energy change and the entropy change for this reaction.
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential O2...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential O2 (g) + 4H+ (aq) +4e− → 2H2O (l) =E0red+1.23V Zn+2 (aq) +2e− → Zn (s) =E0red−0.763V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ecd=-0.13...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ecd=-0.13 V Cro2 (aq)+4 H2O(1)+3e" → Cr(OH)3(s)+50H (aq) Cu2+ (aq)+e → Cut(aq) = +0.153 V Answer the following questions about this cell. 0-0 Write a balanced equation for the half-reaction that happens at the cathode. DI X Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction cof(aq)+4H2O()+3e_ → Cr(OH)3(s)+50H-(aq)| Fe...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction cof(aq)+4H2O()+3e_ → Cr(OH)3(s)+50H-(aq)| Fe (a)teFe() standard reduction potential E d=-0.13 V E01" +0.771 V 2 + Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written Check...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s)...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s) red -0.763 V Zn2+ (aq)+2e NO3(aq)+4 H+ (aq)+3e NO(9)+2H20(1) EO red = +0.96 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. е х Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
(1) Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction....
(1) Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. half-reaction identification Cd(s)Cd2+(aq) + 2e- Ag+(aq) + e-Ag(s) Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients. ? + ? ? + ? 2. Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. half-reaction identification Mn(s)Mn2+(aq) + 2e- Zn2+(aq) + 2e-Zn(s) (2) Write a balanced equation for the overall redox reaction. Use smallest...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction Br2()+2e- 2Br (aq) HNO2(aqpH...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction Br2()+2e- 2Br (aq) HNO2(aqpH (aq)+ e-→ NO(g)+ H2O(I) standard reduction potential Ered1.065 v Erd- +1.00 V Answer the following questions about this cell Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. Do...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ed=-0.763...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ed=-0.763 V Zn²+(aq)+2e MnO2 (aq)+8H+ (aq)+5€ → Zn(s) → Mn²+ (aq)+4 ,00) E cd = +1.51 v Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
3. Write the electrochemical half-cell reactions for oxidation and reduction during uniform corrosion in the following: (Also indicate if corrosion is possible) a. Corrosion of Aluminum in air free sulfuric acid (i.e., No oxygen in the solution) b. Iron in air free acid ferric sulfate solution (assume no O2 in the solution) Hint Fe3+ to Fe reaction is possible due to the presence of the ferric ions c. Carbon steel in aerated seawater (With O2 in the solution) d. Zinc...
please answer all questions for rate. thank you :)
For the following equation: MnO4 (aq) + Ca(s) → MnO2(s) + Ca?*(aq) Standard Reduction Potential values: Mno. MnO2 = 1.68 V Ca? / Ca = -2.76 V (1) Write balanced half-reaction equations for oxidation and reduction (2) Write the balanced equation for the overall redox reaction (3) Use the two balanced half-reactions and standard reduction potential values to construct a spontaneous galvanic cell, and write the cell notation for the galvanic...
Corrosion Problem: Electrode Electrode Pb (s) PbCh (s) HCl (aqueous) AgCI (s)Ag (s) The emf of the cell represented in the accompanying diagram is 0.490 V at 25°C and the temperature coefficient is-1.84 × 10-4 VpC. All the compo- nents are present as pure solids in contact with an HCl electrolyte. (a) Write the half-cell reactions. (b) Write the overall cell reaction (c) Calculate the Gibbs free energy change and the entropy change for this reaction.
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ecd=-0.13 V Cro2 (aq)+4 H2O(1)+3e" → Cr(OH)3(s)+50H (aq) Cu2+ (aq)+e → Cut(aq) = +0.153 V Answer the following questions about this cell. 0-0 Write a balanced equation for the half-reaction that happens at the cathode. DI X Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction cof(aq)+4H2O()+3e_ → Cr(OH)3(s)+50H-(aq)| Fe (a)teFe() standard reduction potential E d=-0.13 V E01" +0.771 V 2 + Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written Check...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s) red -0.763 V Zn2+ (aq)+2e NO3(aq)+4 H+ (aq)+3e NO(9)+2H20(1) EO red = +0.96 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. е х Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction Br2()+2e- 2Br (aq) HNO2(aqpH (aq)+ e-→ NO(g)+ H2O(I) standard reduction potential Ered1.065 v Erd- +1.00 V Answer the following questions about this cell Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. Do...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Ed=-0.763 V Zn²+(aq)+2e MnO2 (aq)+8H+ (aq)+5€ → Zn(s) → Mn²+ (aq)+4 ,00) E cd = +1.51 v Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
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