Redox Reactions and Electrochemistry

1. Introduction to Batteries

1. A battery is an electrochemical device that converts chemical energy into electrical energy.
2. Batteries are classified as primary (non-rechargeable) or secondary (rechargeable).
3. They consist of two electrodes (anode and cathode) and an electrolyte for ionic conduction.

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1. Electrolysis is a process where electrical energy is used to drive a non-spontaneous chemical reaction.
2. Occurs in an electrolytic cell, which consists of two electrodes immersed in an electrolyte solution.
3. The anode is the site of oxidation (loss of electrons), and the cathode is the site of reduction (gain of electrons).

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1. Introduction to Electrochemical Cells

1. Electrochemical cells convert chemical energy into electrical energy or vice versa.
2. They are classified into two types: Galvanic cells (voltaic cells) and electrolytic cells.
3. In both types, redox reactions occur, involving electron transfer.

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1. Introduction to Redox Reactions

1. Redox reactions involve both oxidation (loss of electrons) and reduction (gain of electrons).
2. The term oxidation originally referred to the addition of oxygen, while reduction referred to the removal of oxygen.
3. Modern definitions are based on the transfer of electrons.

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