In the primary batteriesa)the reaction occurs only once and after use ...
Primary batteries cannot be recharged and reused.
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In the primary batteriesa)the reaction occurs only once and after use ...
Primary Batteries
Primary batteries, also known as non-rechargeable batteries, are a type of electrochemical cell that converts chemical energy into electrical energy. These batteries are designed for single-use, meaning that once the reaction within the battery is completed, it cannot be reversed or recharged.
Explanation:
Primary batteries operate through a one-time chemical reaction that occurs within the battery. The reaction involves the conversion of chemical compounds into new substances, resulting in the generation of electrical energy. As the reaction progresses, the reactants are consumed, and the battery gradually loses its ability to produce electrical energy.
Once the reaction is complete and the reactants are depleted, the battery becomes "dead" and cannot be used again. This is because the reaction cannot be reversed or recharged in primary batteries. The components of the battery are typically not designed to withstand the reverse reaction or to be replenished with new reactants.
Reversibility and Reusability:
In contrast to primary batteries, secondary batteries, also known as rechargeable batteries, are designed to be reversible and reusable. Secondary batteries can undergo a reversible chemical reaction, allowing them to be recharged by applying an external electrical current that drives the reaction in the opposite direction.
Secondary batteries are constructed with materials and components that can withstand the reverse reaction and can be recharged multiple times. This makes them suitable for applications where the battery needs to be reused, such as in portable electronic devices, electric vehicles, and renewable energy storage systems.
Conclusion:
In summary, the reaction in primary batteries occurs only once, and once the reactants are depleted, the battery becomes dead and cannot be reused. On the other hand, secondary batteries are designed to be reversible and can be recharged multiple times, making them suitable for reuse. Therefore, the correct answer to the given question is option 'A': The reaction occurs only once, and after use over a period of time, the battery becomes dead and cannot be reused again.