Homework Answers
The answer is d (1 and 3)
Metals like magnesium or zinc readily react with oxygen to form magnesium oxide and zinc oxide.
A process is known as cathodic protection to prevent rust formation (oxidation).
Zn or Mg gives up electrons to oxygen more readily than iron. So, to protect iron it will be attached with metals like zinc or magnesium.
2Mg + O2 
2MgO
2Zn + O2
2ZnO
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-0.04 V) from corrosion can be accomplished by making an electrical contact between iron and certain...
2. Corrosion in neutral medium Some item is made of two metals - zink and nickel which are in contact with each oth...
2. Corrosion in neutral medium Some item is made of two metals - zink and nickel which are in contact with each other. The item undergoes corrosion process in neutral moisture containing environment. What metal is going to oxidize? What chemical element (depolizer) is going to reduce? Write down redox equations for both processes: for metal: for depolizer: po-0.23 V 3. Protection metal against Corrosion (anodic coating) Opt right anodic coating for Pb from the following metals: Pt, Al, Cu,...
2. Corrosion in neutral medium Some item is made of two metals -zink and nickel which are in contact with each othe...
2. Corrosion in neutral medium Some item is made of two metals -zink and nickel which are in contact with each other. The item corrosion procesg ergoes corrosion process in neutral moisture containing environment. What metal is going to oxidize W hat chemical element (depolizer) is going to reduce? Write down redox equations for both processes: for metal: for depolizer -0.23 V 3. Protection metal against Corrosion (anodic coating) Opt right anodic coating for Pb from the following metals: Pt,...
4. Write a balanced equation from each cell notation, then calculate thee of the cell, is...
4. Write a balanced equation from each cell notation, then calculate thee of the cell, is it spontaneous or nonspontaneous? A. Cr(s) Crot || Cui Cu(s) B. Al(s) Al* | Ce Ce Pt C. Cu (s) Cu? || Al Al (s) Useful information: F= 96485 J/V mol electrons, AG ----F-Ecell AG --RTINK: Ece 0.0592/n*logK; EcellEcett -0.0592/n*logQ Ce (aq) + Ag+ (aq) + e Fet (aq) + Cu" (aq) + Cu (aq) + 2e 2H(aq) + 2 Pb (aq) + 2e...
19 20 Question 16 Half-cell Potentials: Half Reaction: E' value + 0.80 V +0.77 V Agte...
19 20 Question 16 Half-cell Potentials: Half Reaction: E' value + 0.80 V +0.77 V Agte → AS Fe3+ + + Fe2+ Cu2+ 2e → Cu Pb2+ + 2e → Pb +0.34 V -0.13 V Ni2+ + 2e → NI -0.25 V - 0.40 V Cd2+ +2e → ca Fe2+ + 2e → Fe Zn2+ + 2e → Zn -0.44 V - 0.76 V A13+ +3 → AI - 1.66 V Consider an electrochemical cell constructed from the following half...
I need help with questione 1-12 and discussion question 1 and 2. The previous pictures help...
I need help with questione 1-12 and discussion question 1 and
2. The previous pictures help determine the chart. Please Show Work
thank you so much
An oxidation half-reaction is characterized by electrons appearing on the product side. The oxidation of aluminum for instance would be represented thusly: Al(s) → Al3+ + 3e- (1) An reduction half-reaction is characterized by electrons appearing on the reactant side. The reduction of ferrous iron for instance would be represented thusly: Fe2+ + 2e...
tandard reduction half-cell potentials at 25 ∘ C Half-reaction E ∘ ( V ) Half-reaction E...
tandard reduction half-cell potentials at 25 ∘ C Half-reaction E ∘ ( V ) Half-reaction E ∘ ( V ) A u 3+ (aq)+3 e − →Au(s) 1.50 F e 2+ (aq)+2 e − →Fe(s) − 0.45 A g + (aq)+ e − →Ag(s) 0.80 C r 3+ (aq)+ e − →C r 2+ (aq) − 0.50 F e 3+ (aq)+3 e − →F e 2+ (aq) 0.77 C r 3+ (aq)+3 e − →Cr(s) − 0.73 C u +...
Use the galvanic cell notation to describe the Daniell cell. (4 marks) Using the reduction potential...
Use the galvanic cell notation to describe the Daniell cell. (4 marks) Using the reduction potential table calculate Eº for the Daniel cell. 12 marks) Calculate the equilibrium constant K for the reaction Cu2+ + Zn → Cu + Zn²+, at 25 °C. (4 marks) Standard Potentials at 25°C Half Reaction Potential Potential +2.87 V 0.000 V +2.07 V -0.04 V +2.05 V -0.13 V -1.69 V -0.14 V +1.69 V -0.23 V +1.67 V -0.26 V +1.63 v -0.28...
the standard reduction potential is attached below Use the table of standard reduction potentials for the...
the standard reduction potential is attached below
Use the table of standard reduction potentials for the following exercises. 4. Predict the products of the following redox reactions, then identify which could spontaneously occur. a) H(aq) + Au (s) → b) H (aq) + Na (8) ► c) Au+ (aq) + Na (5) ► 5. Find a reagent that can oxidize Br" to Br2 but cannot oxidize CI'' to Cl? More than one reagent is possible, but you only need to...
I need the answers for page 2 and three do not pay attention to the first...
I
need the answers for page 2 and three do not pay attention to the
first page!
EXPERIMENT 10: DETERMINATION OF THE ELECTROCHEMICAL SERIES QUESTIONS Which metal was not oxidized by any of the other half-cells? 1. Using Table 1, what are two metal half-cells that would oxidize the metal from question #1? 2 3. Which metal was oxidized by all of the other half-cells? 4. Using Table 1, what are two metal half-cells that the metal from question #3...
ANSWER ALL 3 QUESTIONS AND ALL PARTS Question 1 Using the standard reduction potentials on page 127, draw a compl...
ANSWER ALL 3 QUESTIONS AND ALL PARTS
Question 1 Using the standard reduction potentials on page 127, draw a complete galvanic cell in the space below for Fe Ag a) Clearly label the electrodes, the solutions and the salt bridge. Clearly label which metal is the cathode and anode and a chemical you might use for the salt bridge. b) Give the half-reaction that occurs at the cathode and the half-reaction that occurs at the anode and indicate the direction...
2. Corrosion in neutral medium Some item is made of two metals - zink and nickel which are in contact with each other. The item undergoes corrosion process in neutral moisture containing environment. What metal is going to oxidize? What chemical element (depolizer) is going to reduce? Write down redox equations for both processes: for metal: for depolizer: po-0.23 V 3. Protection metal against Corrosion (anodic coating) Opt right anodic coating for Pb from the following metals: Pt, Al, Cu,...
2. Corrosion in neutral medium Some item is made of two metals -zink and nickel which are in contact with each other. The item corrosion procesg ergoes corrosion process in neutral moisture containing environment. What metal is going to oxidize W hat chemical element (depolizer) is going to reduce? Write down redox equations for both processes: for metal: for depolizer -0.23 V 3. Protection metal against Corrosion (anodic coating) Opt right anodic coating for Pb from the following metals: Pt,...
4. Write a balanced equation from each cell notation, then calculate thee of the cell, is it spontaneous or nonspontaneous? A. Cr(s) Crot || Cui Cu(s) B. Al(s) Al* | Ce Ce Pt C. Cu (s) Cu? || Al Al (s) Useful information: F= 96485 J/V mol electrons, AG ----F-Ecell AG --RTINK: Ece 0.0592/n*logK; EcellEcett -0.0592/n*logQ Ce (aq) + Ag+ (aq) + e Fet (aq) + Cu" (aq) + Cu (aq) + 2e 2H(aq) + 2 Pb (aq) + 2e...
19 20 Question 16 Half-cell Potentials: Half Reaction: E' value + 0.80 V +0.77 V Agte → AS Fe3+ + + Fe2+ Cu2+ 2e → Cu Pb2+ + 2e → Pb +0.34 V -0.13 V Ni2+ + 2e → NI -0.25 V - 0.40 V Cd2+ +2e → ca Fe2+ + 2e → Fe Zn2+ + 2e → Zn -0.44 V - 0.76 V A13+ +3 → AI - 1.66 V Consider an electrochemical cell constructed from the following half...
I need help with questione 1-12 and discussion question 1 and
2. The previous pictures help determine the chart. Please Show Work
thank you so much
An oxidation half-reaction is characterized by electrons appearing on the product side. The oxidation of aluminum for instance would be represented thusly: Al(s) → Al3+ + 3e- (1) An reduction half-reaction is characterized by electrons appearing on the reactant side. The reduction of ferrous iron for instance would be represented thusly: Fe2+ + 2e...
Use the galvanic cell notation to describe the Daniell cell. (4 marks) Using the reduction potential table calculate Eº for the Daniel cell. 12 marks) Calculate the equilibrium constant K for the reaction Cu2+ + Zn → Cu + Zn²+, at 25 °C. (4 marks) Standard Potentials at 25°C Half Reaction Potential Potential +2.87 V 0.000 V +2.07 V -0.04 V +2.05 V -0.13 V -1.69 V -0.14 V +1.69 V -0.23 V +1.67 V -0.26 V +1.63 v -0.28...
the standard reduction potential is attached below
Use the table of standard reduction potentials for the following exercises. 4. Predict the products of the following redox reactions, then identify which could spontaneously occur. a) H(aq) + Au (s) → b) H (aq) + Na (8) ► c) Au+ (aq) + Na (5) ► 5. Find a reagent that can oxidize Br" to Br2 but cannot oxidize CI'' to Cl? More than one reagent is possible, but you only need to...
I
need the answers for page 2 and three do not pay attention to the
first page!
EXPERIMENT 10: DETERMINATION OF THE ELECTROCHEMICAL SERIES QUESTIONS Which metal was not oxidized by any of the other half-cells? 1. Using Table 1, what are two metal half-cells that would oxidize the metal from question #1? 2 3. Which metal was oxidized by all of the other half-cells? 4. Using Table 1, what are two metal half-cells that the metal from question #3...
ANSWER ALL 3 QUESTIONS AND ALL PARTS
Question 1 Using the standard reduction potentials on page 127, draw a complete galvanic cell in the space below for Fe Ag a) Clearly label the electrodes, the solutions and the salt bridge. Clearly label which metal is the cathode and anode and a chemical you might use for the salt bridge. b) Give the half-reaction that occurs at the cathode and the half-reaction that occurs at the anode and indicate the direction...
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