Rechargeable batteries
A - VCE - SSCE Chemistry - Question 1 - 2021 - Paper 1
Question 1
Rechargeable batteries
A. use reversible reactions.
B. operate as galvanic cells during recharge.
C. require a continuous flow of reactants to operate.
D. have fewe... show full transcript
Worked Solution & Example Answer:Rechargeable batteries
A - VCE - SSCE Chemistry - Question 1 - 2021 - Paper 1
Step 1
A. use reversible reactions.
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Answer
Rechargeable batteries utilize reversible chemical reactions to function. This allows them to discharge and recharge efficiently, restoring their original chemical state after use.
Step 2
B. operate as galvanic cells during recharge.
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Answer
During recharging, rechargeable batteries operate as electrolytic cells rather than galvanic cells, using an external power source to reverse the chemical reactions.
Step 3
C. require a continuous flow of reactants to operate.
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Answer
Rechargeable batteries do not necessarily require a continuous flow of reactants. Instead, they store energy and can be operated in a closed system until the charge is depleted.
Step 4
D. have fewer side reactions as temperature increases.
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Answer
Generally, as temperature increases, many batteries can experience increased side reactions that may lead to reduced efficiency or damage, making this statement inaccurate.
