Electrochemistry - Class 12 Chemistry | NCERT for Boards & CUET
Apni Kaksha Official・2 minutes read
The importance of maintaining electricity at home to prevent acid consumption and the significance of a single chemistry chapter worth nine marks are highlighted, with detailed explanations on galvanic cells, non-restriction, and oxidation/reduction processes within electrochemical cells. The text emphasizes the use of elements like zinc and magnesium to prevent rusting, the significance of balancing reactions in cells, and the process of rusting in iron objects, along with the importance of galvanizing iron with zinc for protection.
Insights
- Understanding the division of the chemistry chapter into three parts, focusing on the galvanic cell setup, non-restriction, and electrolyte cell sections, is crucial for mastering the material and scoring well on exams.
- Highlighting the significance of balancing reactions in cells, utilizing elements like zinc and magnesium to prevent rusting, and the protective effect of galvanizing iron with zinc underscores the practical applications of electrochemistry in everyday life, from preventing corrosion to maintaining electricity during power outages.
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Recent questions
What is the importance of maintaining electricity at home?
Maintaining electricity at home is crucial to prevent acid consumption, as discussed in the text. Without electricity, lead-acid accumulators in storage batteries may fail, leading to imbalances and potential hazards. Additionally, electricity is essential for non-spontaneous reactions like electrolysis, which require a power source to drive the process.
How is the chemistry chapter divided?
The chemistry chapter discussed in the text is divided into three main parts: galvanic cell, applications, and electrolyte cell sections. Each part focuses on different aspects of electrochemical cells, such as the setup of galvanic cells, the functions of anode and cathode, and the process of oxidation and reduction within the cells.
What is the significance of Faraday's rule in electrolysis?
Faraday's rule is crucial in electrolysis as it is used to calculate the quantity of deposit formed during the process. By utilizing the formula based on the current passing through the electrolyte and the time elapsed, one can determine the amount of substance deposited, making it a fundamental concept in understanding electrolytic reactions.
How do fuel cells work?
Fuel cells, like those used in NASA rockets, operate by producing water as a byproduct, which prevents pollution. These cells generate electricity through chemical reactions between a fuel source and an oxidizing agent, offering a clean and efficient energy alternative. The text emphasizes the importance of fuel cells in sustainable energy solutions and their role in reducing environmental impact.
Why is balancing reactions important in cells?
Balancing reactions in cells, such as galvanizing iron with zinc, is crucial to prevent rusting and protect materials from corrosion. By using elements like zinc and magnesium, one can create a protective layer that shields the underlying material from oxidation. This process is essential in maintaining the integrity and longevity of various objects, highlighting the significance of balanced reactions in electrochemical applications.
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