When a solution of NaI in water was electrolyzed with graphite electrodes, a gas was evolved at the cathode and a yellow-brown color was observed around the anode. The solution became basic. Which one of statements (a) - (d) is not correct? If all are correct, select option (e). Please see the data page for relevant electrode potentials for the half reactions. a) OH- ions were formed at the cathode. b) I- ions were oxidized c) The gas, which was evolved, was O2. d) Water was reduced e) Statements (a) - (d) are all correct
When a solution of NaI in water was electrolyzed with graphite electrodes, a gas was evolved at the cathode and a yellow-brown color was observed around the anode. The solution became basic. Which one of statements (a) - (d) is not correct? If all are correct, select option (e). Please see the data page for relevant electrode potentials for the half reactions. a) OH- ions were formed at the cathode. b) I- ions were oxidized c) The gas, which was evolved, was O2. d) Water was reduced e) Statements (a) - (d) are all correct
Chemical Principles in the Laboratory
11th Edition
ISBN:9781305264434
Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Chapter32: Voltaic Cell Measurements
Section: Chapter Questions
Problem 2ASA
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When a solution of NaI in water was electrolyzed with
graphite electrodes, a gas was evolved at the cathode and a yellow-brown color was
observed around the anode. The solution became basic. Which one of statements (a) - (d)
is not correct? If all are correct, select option (e). Please see the data page for relevant
electrode potentials for the half reactions.
a) OH- ions were formed at the cathode.
b) I- ions were oxidized
c) The gas, which was evolved, was O2.
d) Water was reduced
e) Statements (a) - (d) are all correct
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