The reaction which is responsible for the production of electricity in the voltaic cell is:
Correct answer: C. Redox reaction
- A. Hydrolysis reaction
- B. Oxidation reaction
- C. Redox reaction
- D. Reduction reaction
Explanation
The correct answer is C: Redox reaction. In a voltaic cell, the production of electricity is due to redox reactions, where oxidation and reduction occur simultaneously, allowing for the flow of electrons and thus electricity. Option A, Hydrolysis, is incorrect because it involves the reaction with water and not electron transfer. Option B, Oxidation, is only a part of the redox process and involves electron loss at the anode. Option D, Reduction, involves electron gain at the cathode, but alone does not result in electricity production in a voltaic cell.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
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