The discharge reaction in a vanadium redox battery is represented by the following equation - VCE - SSCE Chemistry - Question 14 - 2022 - Paper 1
Question 14
The discharge reaction in a vanadium redox battery is represented by the following equation.
$$VO_2^+(aq) + 2H^+(aq) + V^{2+}(aq) \rightarrow V^{3+}(aq) + VO_2^{2+}... show full transcript
Worked Solution & Example Answer:The discharge reaction in a vanadium redox battery is represented by the following equation - VCE - SSCE Chemistry - Question 14 - 2022 - Paper 1
Step 1
A. $H^+$ is the reducing agent.
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Answer
This statement is incorrect. In redox reactions, the reducing agent is the species that donates electrons. H+ is not acting as the reducing agent during recharging.
Step 2
B. $H_2O$ is the oxidising agent.
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This is also incorrect. While water may participate in the reaction, it is not considered the oxidising agent when the battery is recharging.
Step 3
C. $VO_2^+$ is the reducing agent.
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Answer
This statement is incorrect as VO2+ acts as an oxidising agent rather than a reducing agent during the reaction.
Step 4
D. $VO_2^{+}$ is the oxidising agent.
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Answer
This statement is correct. During the recharging process, VO2+ accepts electrons, thus functioning as the oxidising agent.
