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Electrochemistry

Short Answer Type

31. What are the products obtained during electrolysis of CuSO₄ using Cu electrodes?

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32. Give the unit of molar conductivity.

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33. What is the representation of the Daniell cell?

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34. Which solution will allow greater conductance of electricity, 1 M NaCl at 293 K or 1 M NaCl at 323 K?

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35. Give an example of “fuel celIs”.

Answer:

Galvanic cells that are designed to convert
the energy of combustion of fuels like hydrogen, methane, methanol,
etc. directly into electrical energy are called fuel cells.

H₂—O₂ fuel cell.

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36. Why is it impossible to obtain the electrode potential for a single half cell.

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37. Write the equation showing the relation between standard free energy and standard cell potential?

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38. How does fuel cell operate?

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39. Why is the equilibrium constant K related to only
E°_cell and not E_cell?

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40. Explore the possibility of a substance that can be replace MnO₂ is designing a dry cell.

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