Under standard conditions, the galvanic cell shown above has a cell potential of+1.56 V using the reaction given. The salt bridge contains KNO3, which allows K+ ions and NO, ions to move in the directions indicated. If KNO3 in the salt bridge is replaced with KOH, some Zn(OH), (s) precipitates in the Zn-Zn(NO,), half-cell. Which of the following best explains how the cell potential is affected as Zn(OH), (s) starts to precipitate, and why? The cell potential increases because the concentration of Zn2+(ag) decreases and Q. ,becomes smaller. |Ag"* The cell potential decreases because the concentration of Zn2+ (aq) decreases and Q, Zn2 becomes smaller. The cell potential increases because Kt ions replace Zn?+ ions and the reduction of K* is more thermodynamically favored than the reduction of Zn?+. D The cell potential stays the same because Zn(OH), (s) is not part of the redox reaction responsible for the operation of the galvanic cel.

5) For this problem refer to the electrochemical cell below a) Which electrode is the cathode and which is the anode? b) Is this cell electrolytic or galvanic? Explain. c) If the concentration of dissolved zinc ions were increased, how would this change the measured voltage? Volumeter so so; Znisi - Zntag) - 2e Cagl + 2e -Cuis)

How long will it take in hours to create 1.026 grams of Cr at the cathode of an electrolytic cell if 265.8 mA of current is passed through a solution containing Cr(NO3)6 molar mass of Cr is 51.9901

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.) The anode compartment could be I2|I-. The cathode reaction is Pb2+ + 2e- -> Pb Pb is oxidized at the cathode. Pb2+ is reduced at the cathode. In the external circuit, electrons flow from the other compartment to the Pb2+|Pb 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.) 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.

A standard galvanic cell is constructed with Mg2+ | Mg and Br₂ Br half cell compartments connected by a salt bridge. Which of the following statements Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) O The cathode compartment is the Br₂ | Br compartment. The anode compartment is the Br₂ Br compartment. In the external circuit, electrons flow from the Mg2+ | Mg compartment to the Br₂ | Br compartment. As the cell runs, anions will migrate from the Mg2+ | Mg compartment to the Br₂ | Br compartment. O Mg2+ is reduced at the cathode.

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

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.) As the cell runs, anions will migrate from the other compartment to the Cu2+|Cu+ compartment. The cathode reaction is Cu+ -> Cu2+ + e-. F2|F- could be the other standard half cell. In the external circuit, electrons flow from the other compartment to the Cu2+|Cu+ compartment. The anode reaction could be Zn -> Zn2+ + 2e-.

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