Which one of the following would occur at the negative electrode of the cell as it generates electricity?
A - VCE - SSCE Chemistry - Question 15 - 2009 - Paper 1
Question 15
Which one of the following would occur at the negative electrode of the cell as it generates electricity?
A. production of H+
B. formation of H₂O
C. consumption of C... show full transcript
Worked Solution & Example Answer:Which one of the following would occur at the negative electrode of the cell as it generates electricity?
A - VCE - SSCE Chemistry - Question 15 - 2009 - Paper 1
Step 1
production of H+
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Answer
At the negative electrode of an electrochemical cell, reduction reactions occur. The production of H⁺ ions is typically associated with oxidation, not reduction, hence this option is incorrect.
Step 2
formation of H₂O
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Answer
The formation of water generally occurs at the positive electrode, where reductions involving oxygen take place. Therefore, this option is also incorrect.
Step 3
consumption of CO₂
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Answer
The consumption of CO₂ is not typically a reaction that occurs at the electrode, especially in standard galvanic cells. This option is incorrect.
Step 4
reduction of CH₃OH
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Answer
The reduction of CH₃OH (methanol) can occur at the negative electrode, where it gains electrons. This is a valid reaction, thus making this option the correct answer.
