1- Corrosion can be precisely prevented by transforming the anodic regions on the surface of a metal into cathodes. Il- For cathodic protection, the same electrolyte is immersed in the same electrolyte to act as a metal anode. II- Cathodic protection can be applied with inert anodes. IV- In external cathodic protection, the (-) end of the direct current source is connected to the anode and the (+) end to the metal to be protected. Which of the above is/are wrong I ve II A-) None B-) Неря C-) Il ve IV D-)

1- Corrosion can be precisely prevented by transforming the anodic regions on the surface of a metal into cathodes. Il- For cathodic protection, the same electrolyte is immersed in the same electrolyte to act as a metal anode. II- Cathodic protection can be applied with inert anodes. IV- In external cathodic protection, the (-) end of the direct current source is connected to the anode and the (+) end to the metal to be protected. Which of the above is/are wrong I ve II A-) None B-) Неря C-) Il ve IV D-)

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...

See similar textbooks

Similar questions

A standard galvanic cell is constructed in which a Co2+ | Co half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) The cathode reaction is Co2+ + 2e -> Co. Co is oxidized at the cathode. The anode compartment could be Fe³+|Fe²+. As the cell runs, anions will migrate from the Co²+ | Co compartment to the other compartment. In the external circuit, electrons flow from the Co²+ | Co compartment to the other compartment.
Consider a voltaic cell comprised of Zn/Zn2+ at one electrode and Fe2*/Fe3+ at the other electrode at standard conditions. Electrons will flow from the [ Select ] , which is the [ Select ] , and the cations in the salt bridge will flow towards the [Select ] . You may find a list of standard reduction potentials useful.
thank you, i have one more
A standard galvanic cell is constructed with Al3+|Al and I2|I¯ half cell compartments connected by a salt bridge. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) As the cell runs, anions will migrate from the Al3+|Al compartment to the I2|I compartment. I is oxidized at the anode. In the external circuit, electrons flow from the Al3+|Al compartment to the I2|I compartment. The cathode compartment is the I2|I" compartment. The cathode compartment is the Al3+|Al compartment.
2. In the electrolysis of an aqueous Zn(NO3)2 solution, what reactions occur at the anode and at the cathode, assuming standard conditions? O, + 4H + 4e → 2H;O 6° = 1.23 V 2H,0 + 2e → H2 + 20H E° = -0.83V Zn2 + 2e → Zn ɛ° = -0.76 V NO, + 4H + 3e' → NO + 2H20 E° = 0,96 V ANODE: CATHODE:
A standard galvanic cell is constructed with Cu2+ | Cu+ and Cl2 | Cl- half cell compartments connected by a salt bridge. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) -In the external circuit, electrons flow from the Cl2|Cl- compartment to the Cu2+|Cu+ compartment. -The anode compartment is the Cl2|Cl- compartment. -As the cell runs, anions will migrate from the Cl2|Cl- compartment to the Cu2+|Cu+ compartment. -Cu+ is oxidized at the anode. -The cathode compartment is the Cl2|Cl- compartment.
A standard galvanic cell is constructed in which a Cd²+ | Cd half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) In the external circuit, electrons flow from the other compartment to the Cd2"|Cd compartment. The cathode reaction is Cd -> Cd²+ + 2e¯ Br2|Br could be the other standard half cell. U Cr**|Cr2+ could be the other standard half cell. The cathode reaction is Cd2+ + 2e -> Cd
A standard galvanic cell is constructed in which a Cd2+ | Cd half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) In the external circuit, electrons flow from the Cd2+|Cd compartment to the other compartment. As the cell runs, anions will migrate from the Cd2+|Cd compartment to the other compartment. O Cd is oxidized at the cathode. The anode compartment could be I2|I. UThe cathode reaction is Cd2+ + 2e -> Cd.
A standard galvanic cell is constructed in which a Cd²+ | Cd half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) O Cd is oxidized at the cathode. Zn2"|Zn could be the other standard half cell. Hg-"Hg could be the other standard half cell. As the cell runs, anions will migrate from the other compartment to the Cd-"|Cd compartment. In the external circuit, electrons flow from the other compartment to the Cd²"|Cd compartment.
t/takeCovalentActivity.do?locator-assignment-take [Review Topics] [References] Use the References to access important values if needed for this question. A standard galvanic cell is constructed in which a Pb2+ | Pb half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) Fe3+|Fe2+ could be the other standard half cell. Mn2+1Mn could be the other standard half cell. OPb is oxidized at the cathode. 0 The cathode reaction is Pb2+ + 2e -> Pb As the cell runs, anions will migrate from the Pb2+|Pb compartment to the other compartment. Submit Answer Retry Entire Group 7 more group attempts remaining
Use smallest possible integer coefficients. If a box is not needed, leave it blank. Use a table of Standard Reduction Potentials to predict if a reaction will occur between Hg metal and I,(s), when the two are brought in contact via standard half-cells in a voltaic cell. If a reaction will occur, write a balanced net ionic equation for the reaction, assuming that the product ions are in aqueous solution. If no reaction will occur, leave all boxes blank.
Use the References to access important values if needed for this question. A standard galvanic cell is constructed in which a Cu²* | Cu half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) O Cu is oxidized at the cathode. O Cr3+|Cr2+ could be the other standard half cell. The anode reaction could be Cr2* -> Cr³* + e Ag"Ag could be the other standard half cell. U As the cell runs, anions will migrate from the Cu2"|Cu compartment to the other compartment. Submit Answer Try Another Version 2 item attempts remaining