Multiple Choice
Which of the following statements is TRUE for a voltaic cell, but FALSE for an electrolytic cell?
I. The flow of electrons is spontaneous.
II. Oxidation occurs at the anode.
III. Electrons flow from the anode to the cathode.
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5. Classification & Balancing of Chemical Reactions
Galvanic Cell (Simplified)
Multiple Choice
Which of the following statements is true for a salt bridge?
A
Contains neutral atoms that interact with the ions in both half-cell compartments.
B
Serves as a route through which ions can flow freely.
C
Serves as the site of oxidation.
D
Serves as the site of reduction.
Verified step by step guidance1
Understand the role of a salt bridge in an electrochemical cell: It is a device used to maintain electrical neutrality by allowing the flow of ions between the two half-cells.
Recognize that a salt bridge does not contain neutral atoms; instead, it contains a salt solution that dissociates into ions.
Identify that the primary function of a salt bridge is to allow ions to flow freely between the two half-cells, preventing charge buildup.
Clarify that oxidation and reduction occur at the electrodes, not within the salt bridge itself.
Conclude that the statement 'Serves as a route through which ions can flow freely' is true for a salt bridge, as it facilitates the movement of ions to maintain charge balance.
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