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When the cell is recharged, which one of the following processes occurs at the electrode connected to the positive terminal of the external power source? A - VCE - SSCE Chemistry - Question 16 - 2007 - Paper 1
Question 16
When the cell is recharged, which one of the following processes occurs at the electrode connected to the positive terminal of the external power source? A. reductio... show full transcript
Worked Solution & Example Answer:When the cell is recharged, which one of the following processes occurs at the electrode connected to the positive terminal of the external power source? A - VCE - SSCE Chemistry - Question 16 - 2007 - Paper 1
Step 1
C. oxidation of Ni(OH)2(s)
Answer
When recharging a battery, the electrode connected to the positive terminal of the external power source undergoes oxidation. In this case, the correct process occurring at that electrode is the oxidation of Ni(OH)2(s). The reaction can be represented as:
ightarrow NiO(s) + H_2O + 2e^-$$ This process involves the loss of electrons, which is characteristic of oxidation. Therefore, option C is the correct answer.