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Which of the following alternatives correctly describes the polarity of, and the reaction that occurs at, the anode of this cell? | anode polarity | reaction at the anode | |----------------|-----------------------| | A - VCE - SSCE Chemistry - Question 9 - 2003 - Paper 1
Question 9
Which of the following alternatives correctly describes the polarity of, and the reaction that occurs at, the anode of this cell? | anode polarity | reaction at the... show full transcript
Worked Solution & Example Answer:Which of the following alternatives correctly describes the polarity of, and the reaction that occurs at, the anode of this cell? | anode polarity | reaction at the anode | |----------------|-----------------------| | A - VCE - SSCE Chemistry - Question 9 - 2003 - Paper 1
Step 1
negative
Answer
At the anode of a galvanic cell, oxidation occurs. The correct description is that the anode is negatively charged because it attracts cations from the solution. The reaction at the anode for this cell, as described in choice B, is:
ightarrow ext{Ni}^{2+}(aq) + 2e^-$$ This indicates that solid nickel is oxidized to nickel ions, releasing electrons into the circuit.