Consider the following half cells which are set up under standard conditions - VCE - SSCE Chemistry - Question 11 - 2007 - Paper 1
Question 11
Consider the following half cells which are set up under standard conditions.
| half cell | electrode | electrolyte |
|-----------|-----------|-------------|
| I ... show full transcript
Worked Solution & Example Answer:Consider the following half cells which are set up under standard conditions - VCE - SSCE Chemistry - Question 11 - 2007 - Paper 1
Step 1
When a galvanic cell is constructed from half cell I and half cell II, the electrode in half cell II is negative.
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Answer
The reaction between metal A and B3+ indicates that metal A is oxidized while B3+ is reduced.
Step 2
When a galvanic cell is constructed from half cell II and half cell III, the electrode in half cell III is negative.
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Answer
In this case, the reduction of C+ shows that it is gaining electrons, thus making it the strongest oxidant.
Step 3
The strongest oxidant is:
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Answer
Based on the reactions, A2+ (aq) is the strongest oxidant, thus the correct answer is A.
