Problem: Consider the following voltaic cell. Which electrode is the cathode?

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Consider the following voltaic cell.
A diagram shows a simple voltaic cell, with iron and silver electrodes. Two beakers are connected by a salt bridge. The beaker on the left contains a one molar Fe2+ (aqueous) solution and has an Fe (solid) electrode; the beaker on the right contains a one molar Ag+ (aqueous) solution and has an Ag (solid) electrode. A voltmeter is connected to both electrodes; electron flow through the voltmeter is from the Fe electrode toward the Ag electrode.

Which electrode is the cathode?

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