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Electrochemistry is the branch of Chemistry that studies the relationship between electrical energy and chemical reactions. It explains how chemical reactions can produce electricity and how electrical energy can be used to drive chemical changes.

Electrochemistry is one of the most important chapters in BITSAT Chemistry and frequently appears in both conceptual and numerical questions.

What is Electrochemistry?

Electrochemistry deals with chemical processes involving the movement of electrons. These processes occur in systems known as electrochemical cells, where chemical energy and electrical energy are interconverted.

The principles of electrochemistry are widely used in batteries, electroplating, corrosion prevention, and industrial manufacturing.

Electrochemical Cells

An electrochemical cell is a device in which chemical reactions produce electrical energy or electrical energy causes chemical reactions.

ELECTRO CHEMISTRY
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Types of Electrochemical Cells

Galvanic Cells

These cells convert chemical energy into electrical energy through spontaneous chemical reactions.

Electrolytic Cells

These cells use electrical energy to carry out non-spontaneous chemical reactions.

Important Concepts

Conductance

Conductance measures the ability of a substance to allow the flow of electric current.

Electrolysis

Electrolysis is the process of using electricity to bring about a chemical change in an electrolyte.

Batteries

Batteries are electrochemical devices that store chemical energy and convert it into electrical energy when required.

Applications of Electrochemistry

  • Batteries and power storage systems.
  • Electroplating of metals.
  • Corrosion control and prevention.
  • Extraction and purification of metals.
  • Industrial chemical manufacturing.

Importance for BITSAT

Electrochemistry is a high-weightage chapter in BITSAT Chemistry. Questions are commonly asked on electrochemical cells, conductance, electrolysis, batteries, and practical applications. A strong understanding of this chapter helps students solve both theoretical and numerical problems effectively.

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