6. Which one of the following reactions must be carried out in an electrolytic cell rather than in a galvanic cell? (1) Zn²+ (aq) + Ca(s) → Zn(s) + Ca²+ (aq) (3) 2Al(s) + 3Fe²+ (aq) → 2A1³+ (aq) + 3Fe(s) (2) Al³+ (aq) + 3Br (aq) → Al(s) + 3/2 Brz(1) (4) H2(g) + 12(s)→→ 2H*(aq) + 2H(aq) (5) Fe²+ (aq) + Mg(s) → Fe(s) + Mg2+ (aq) 7. An electrochemical cell constructed from the following half cells, linked by a NaNO3 salt bridge. - a Ni electrode in 1.0 M NiCl2 solution - a Ag electrode in 1.0 M AgNO3 solution When the cell is running spontaneously, which statement is correct? (1) The silver electrode loses mass and the silver electrode is the cathode. (2) The silver electrode gains mass and the silver electrode is the cathode. (3) The nickel electrode gains mass and the nickel electrode is the anode. (4) The nickel electrode loses mass and the nickel electrode is the cathode. (5) The nickel electrode gains mass and the nickel electrode is the cathode.
6. Which one of the following reactions must be carried out in an electrolytic cell rather than in a galvanic cell? (1) Zn²+ (aq) + Ca(s) → Zn(s) + Ca²+ (aq) (3) 2Al(s) + 3Fe²+ (aq) → 2A1³+ (aq) + 3Fe(s) (2) Al³+ (aq) + 3Br (aq) → Al(s) + 3/2 Brz(1) (4) H2(g) + 12(s)→→ 2H*(aq) + 2H(aq) (5) Fe²+ (aq) + Mg(s) → Fe(s) + Mg2+ (aq) 7. An electrochemical cell constructed from the following half cells, linked by a NaNO3 salt bridge. - a Ni electrode in 1.0 M NiCl2 solution - a Ag electrode in 1.0 M AgNO3 solution When the cell is running spontaneously, which statement is correct? (1) The silver electrode loses mass and the silver electrode is the cathode. (2) The silver electrode gains mass and the silver electrode is the cathode. (3) The nickel electrode gains mass and the nickel electrode is the anode. (4) The nickel electrode loses mass and the nickel electrode is the cathode. (5) The nickel electrode gains mass and the nickel electrode is the cathode.
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 22E: The mass of three different metal electrodes, each from a different galvanic cell, were determined...
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