2. Electrochemistry
Electrochemistry studies the interconversion between chemical energy and electrical energy through electrochemical cells. It encompasses concepts such as galvanic and electrolytic cells, the Nernst equation, and the conductivity of solutions. Additionally, electrochemical principles are crucial in applications such as batteries, fuel cells, and corrosion processes, highlighting their importance in various practical contexts.
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2.4Conductance Of Electrolytic Solutions
This section discusses the principles of conductance and resistivity,...
What we have learnt
- Electrochemical cells convert chemical energy into electrical energy or vice versa.
- The standard electrode potential is critical in determining the feasibility of reactions.
- Conductivity of solutions and its relationship with ion concentration is fundamental to understanding electrolysis.
Key Concepts
- -- Galvanic Cell
- A device that converts chemical energy from spontaneous redox reactions into electrical energy.
- -- Electrolytic Cell
- A cell that uses electrical energy to drive a non-spontaneous chemical reaction.
- -- Nernst Equation
- An equation that relates the electrode potential of a cell to the standard electrode potential and the concentrations of the species involved.
- -- Conductivity
- A measure of the ability of a solution to conduct electric current, depending on the concentration of ions.
- -- Molar Conductivity
- The conductivity of a solution divided by its concentration, providing insight into how well an electrolyte dissociates into ions.
- -- Kohlrausch's Law
- States that the limiting molar conductivity of an electrolyte is the sum of the contributions from its individual ions.
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