hich of the following statements concerning a voltaic cell is FALSE?The oxidation half-reaction occurs at the cathode.At the cathode, a substance will gain electrons.At the anode, a substance will lose electrons.The cell consists of two half-cells.
Question
hich of the following statements concerning a voltaic cell is FALSE?The oxidation half-reaction occurs at the cathode.At the cathode, a substance will gain electrons.At the anode, a substance will lose electrons.The cell consists of two half-cells.
Solution
The false statement is: "The oxidation half-reaction occurs at the cathode."
Here's why:
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In a voltaic cell, the oxidation half-reaction actually occurs at the anode, not the cathode. Oxidation is the process of losing electrons, and this happens at the anode.
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The statement "At the cathode, a substance will gain electrons" is true. This process is known as reduction, and it occurs at the cathode in a voltaic cell.
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The statement "At the anode, a substance will lose electrons" is also true. As mentioned above, this process is known as oxidation.
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The statement "The cell consists of two half-cells" is true. A voltaic cell is made up of two half-cells. Each half-cell consists of an electrode (the anode or cathode) and an electrolyte.
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