Lead accumulators are_______________?
Correct answer: D. both A & C
- A. secondary cell
- B. primary cell
- C. voltaic cell
- D. both A & C
Explanation
A lead accumulator is a secondary cell because its discharge reaction can be reversed by passing an external current. During discharge it also operates as a voltaic cell, converting chemical energy into electrical energy, so both descriptions apply. The likely wrong choice is primary cell, which refers to a cell that is not practically rechargeable.
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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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