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FAQs on Quick Revision: Electrochemistry - Chemistry Class 12 - NEET

1. What is electrochemistry and how is it important in the NEET exam?
Ans. Electrochemistry is the branch of chemistry that deals with the study of the interconversion of electrical and chemical energy. It is an important topic in the NEET exam as it helps in understanding various concepts such as electrolysis, electrode potential, and redox reactions, which are frequently asked in the exam.
2. What are the applications of electrochemistry in daily life?
Ans. Electrochemistry finds various applications in our daily lives. Some of them include the use of batteries in electronic devices, electroplating of metals to prevent corrosion, electrolysis for water purification, and electrochemical sensors for detecting glucose levels in blood.
3. What is electrode potential and how is it measured?
Ans. Electrode potential is the measure of the tendency of an electrode to gain or lose electrons. It is measured using a reference electrode, such as the standard hydrogen electrode (SHE), which has a known electrode potential of 0 volts. The electrode potential of other electrodes is then compared to the reference electrode.
4. What is electrolysis and how does it work?
Ans. Electrolysis is a process that uses an electric current to drive a non-spontaneous chemical reaction. It involves the decomposition of an electrolyte into its constituent elements. Positive ions migrate towards the cathode (negative electrode) and gain electrons, while negative ions migrate towards the anode (positive electrode) and lose electrons.
5. What is Faraday's law of electrolysis?
Ans. Faraday's law of electrolysis states that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the electrolyte. It can be expressed as: Amount of substance = (Current × Time) / (n × F) where Current is the electric current, Time is the time of electrolysis, n is the number of electrons involved in the reaction, and F is the Faraday's constant.
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