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14. A sacrificial anode for zinc could be made of: Select one: a. aluminum b. none...
Which of the following metals could really be used as sacrificial anodes for iron (Fe2+(aq) +...
Which of the following metals could really be used as sacrificial anodes for iron (Fe2+(aq) + 2e??Fe(s), E0 =-0.44V )? A) Tin F) Magnesium B) Zinc G) Lithium C) Aluminum H) Copper D) Lead I) Nickel E) Sodium J) None of the above Enter all that apply in alphabetical order (e.g. AB, ABDF, etc.)
A "galvanized" nail is one in which a sacrificial metal, usually zinc, is added to the...
A "galvanized" nail is one in which a sacrificial metal, usually zinc, is added to the iron. When corrosion takes place, the zinc is oxidized first, keeping the structural integrity of the iron intact. Given the table of reduction potentials, which other metals listed below could also be used to galvanize iron? Select ALL that are correct Pb Ag Ni Cr None of these
1) A metal "X" is used as a “sacrificial” anode on hulls of salt water vessels...
1) A metal "X" is used as a “sacrificial” anode on hulls of salt water vessels made of iron. The effect is to reverse the oxidation of iron to iron (II) by causing X to oxidize to the X ion. Calculate the voltage (in V, to two decimal places) for this reaction if it takes place under standard conditions. The standard reduction potential for X is -0.57 V (minus 0.57 V). 2) Batteries are charged and discharged due to the...
46.) A zinc sacrificial anode would be effective at protecting all of the following metals, EXCEPT......
46.) A zinc sacrificial anode would be effective at protecting
all of the following metals, EXCEPT...
47.) Which answer best describes the strongest intermolecular
force that can exist between two long chain polymer molecules of
polyethylene?
When the temperature of a polymer sample is below it's glass
transition temperature (Tg)
Question 46 3 pts A zinc sacrificial anode would be effective at protecting all of the following metals, EXCEPT... O Silver Aluminum O Copper Lead O Iron Question 47 2...
electrochemistry/corrosion question The concept of "cathodic protection" or a "sacrificial anode" operates on the basis of...
electrochemistry/corrosion question
The concept of "cathodic protection" or a "sacrificial anode" operates on the basis of protecting a metal from what? O 1 Galvanic corrosion 2 Crevice corrosion 3. pitting O 4. Uniform corrosion O5. More than one of the above 6. None of the above
4. If m is -2, the element could be: Select one: a. calcium b. scandium c....
4. If m is -2, the element could be: Select one: a. calcium b. scandium c. lead d. cerium e. two of the above f. none of the above 6. The second quantum number (1) ... Select one: a. describes the energy level and size of the orbital b. specifies the orbital shape c. describes the spatial orientation of the orbital d. specifies the direction of the orientation of the orbital spin 7. In the reaction 2 H2(g)+02 ( g)...
14. In which cell is there one half-cell containing solid lead and lead() ions and the...
14. In which cell is there one half-cell containing solid lead and lead() ions and the other half-cell containing aluminum and aluminum ions? A. PS All Pblys B. AICIYAH Pb, PUSO2) c. PCM PA1,50 Drag D. Aly/50 xan All Pro PCI 15. If the electrical potential for the reduction half-reaction Se, +2e--Sedes were assigned a value 0.00 V, what would be the electrical potential for the reaction Zn +20+ZAW? A B -0.92 V -0.76 V C D +0.16 V -168...
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by...
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by a wire and the solutions are connected with a salt bridge. One electrode consists of an aluminum bar in a 1.0 M solution of aluminum nitrate. The other electrode consists of zinc bar in a 1.0 M solution of zinc nitrate. Draw the complete electrochemical cell diagram and use it to answer the questions that follow. a. Which electrode is the cathode and which...
Philosopher who said human consciousness could evolve toward absolute consciousness Select one: a. Hegel b. Kant...
Philosopher who said human consciousness could evolve toward absolute consciousness Select one: a. Hegel b. Kant c. Heidegger d. none of the above e. Marx Nietzsche's term for the highest stage of humanity is Select one: a. none of the above b. the great-souled individual c. the last man d. the overman
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn electrode inserted in a solution...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
A "galvanized" nail is one in which a sacrificial metal, usually zinc, is added to the iron. When corrosion takes place, the zinc is oxidized first, keeping the structural integrity of the iron intact. Given the table of reduction potentials, which other metals listed below could also be used to galvanize iron? Select ALL that are correct Pb Ag Ni Cr None of these
46.) A zinc sacrificial anode would be effective at protecting
all of the following metals, EXCEPT...
47.) Which answer best describes the strongest intermolecular
force that can exist between two long chain polymer molecules of
polyethylene?
When the temperature of a polymer sample is below it's glass
transition temperature (Tg)
Question 46 3 pts A zinc sacrificial anode would be effective at protecting all of the following metals, EXCEPT... O Silver Aluminum O Copper Lead O Iron Question 47 2...
electrochemistry/corrosion question
The concept of "cathodic protection" or a "sacrificial anode" operates on the basis of protecting a metal from what? O 1 Galvanic corrosion 2 Crevice corrosion 3. pitting O 4. Uniform corrosion O5. More than one of the above 6. None of the above
4. If m is -2, the element could be: Select one: a. calcium b. scandium c. lead d. cerium e. two of the above f. none of the above 6. The second quantum number (1) ... Select one: a. describes the energy level and size of the orbital b. specifies the orbital shape c. describes the spatial orientation of the orbital d. specifies the direction of the orientation of the orbital spin 7. In the reaction 2 H2(g)+02 ( g)...
14. In which cell is there one half-cell containing solid lead and lead() ions and the other half-cell containing aluminum and aluminum ions? A. PS All Pblys B. AICIYAH Pb, PUSO2) c. PCM PA1,50 Drag D. Aly/50 xan All Pro PCI 15. If the electrical potential for the reduction half-reaction Se, +2e--Sedes were assigned a value 0.00 V, what would be the electrical potential for the reaction Zn +20+ZAW? A B -0.92 V -0.76 V C D +0.16 V -168...
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by a wire and the solutions are connected with a salt bridge. One electrode consists of an aluminum bar in a 1.0 M solution of aluminum nitrate. The other electrode consists of zinc bar in a 1.0 M solution of zinc nitrate. Draw the complete electrochemical cell diagram and use it to answer the questions that follow. a. Which electrode is the cathode and which...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
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