(a) State and explain Kohlrausch's law of independent migration of ions. (b) What are Galvanic cells? Explain the working of Galvanic cell with a neat sketch taking Daniel cell as... (a) State and explain Kohlrausch's law of independent migration of ions. (b) What are Galvanic cells? Explain the working of Galvanic cell with a neat sketch taking Daniel cell as an example. (a) Give a detailed account of collision theory of reaction rates of bimolecular gaseous reactions. (b) What is 'molecularity' of a reaction? How is it different from 'order' of a reaction? Name one bimolecular and one trimolecular gaseous reaction.
Understand the Problem
The question is asking about topics in electrochemistry and chemical kinetics, specifically addressing Kohrausch's law, Galvanic cells, collision theory, molecularity of reactions, and examples of bimolecular and trimolecular reactions.
Answer
Kohlrausch’s law: ions migrate independently. Galvanic cell: converts chemical to electrical energy (Daniel cell example). Collision theory: reactions require sufficient, oriented collisions. Molecularity: number of reacting species; different from reaction order.
["Kohlrausch's law states that each ion contributes independently to total conductance at infinite dilution.","Galvanic cells convert chemical energy into electrical energy using spontaneous redox reactions, like in a Daniel cell, where zinc and copper electrodes are used.","Collision theory explains that molecules must collide with sufficient energy and proper orientation to react.","Molecularity refers to the number of molecules involved in an elementary reaction, whereas order is derived from the rate law."]
Answer for screen readers
["Kohlrausch's law states that each ion contributes independently to total conductance at infinite dilution.","Galvanic cells convert chemical energy into electrical energy using spontaneous redox reactions, like in a Daniel cell, where zinc and copper electrodes are used.","Collision theory explains that molecules must collide with sufficient energy and proper orientation to react.","Molecularity refers to the number of molecules involved in an elementary reaction, whereas order is derived from the rate law."]
More Information
Kohlrausch's law helps in the analysis of ionic conductance. Galvanic cells are crucial in batteries and electrochemical applications. Collision theory is fundamental in understanding reaction kinetics.
Tips
Confusion often arises between molecularity and order. Remember, molecularity is about individual steps, while order is for the overall reaction.
Sources
- Galvanic Cells - Chemistry LibreTexts - chem.libretexts.org
- Collision Theory - Chemistry LibreTexts - chem.libretexts.org
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