In the reaction H2O + C → CO + H2 :
Correct answer: B. H2O is the oxidising agent
- A. H2O is the reducing agent
- B. H2O is the oxidising agent
- C. Carbon is the oxidising agent
- D. Oxidation-reaction does not occur
Explanation
In the given reaction, H2O is reduced to H2, meaning it gains hydrogen atoms. This indicates that H2O is acting as an oxidizing agent, as it accepts electrons. Carbon, on the other hand, is oxidized to CO, losing electrons in the process, which means it acts as a reducing agent. Thus, the correct answer is that H2O is the oxidizing agent. Other options are incorrect as they misidentify the roles of H2O and carbon in the reaction.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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