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Why a cell stops working after some time...

Why a cell stops working after some time ?

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With time, concentrations of the electrolytic solutions charge. Hence, their electrode potentials change when the electrode potentials of the two half-cells become equal, the cell stops working.
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PRADEEP-ELECTROCHEMISTRY-ADDITIONAL QUESTIONS(VERY SHORT ANSWER QUESTIONS)
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  2. Write Nernst equation for the reaction (i) 2Cr(s)+3Cd^(+ +)(aq)to2Cr...

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  3. Why a cell stops working after some time ?

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  4. concentration cells

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  5. How is free energy change of a cell reaction related to (i) its emf (i...

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  6. Is free enegy change of a cell reaction an intensive property or exten...

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  7. What is overvoltage?

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  8. Write the product obtained at anode on electrolysis of concentrated su...

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  9. Name the electrolyte used in (i) dry cell (ii) mercury cell.

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  10. What is a primary cell? Give an example.

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  11. Give an example of a secondary cell.

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  12. Write the name of a cell used in small watches.

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  13. Which cells were used in the Apollo space program? What was the produc...

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  14. Define fuel cell?

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  15. How does H(2)-O(2) fuel cell operate?

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  16. State two advantages of H(2)-O(2) fuel cell over ordinary cell.

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  17. Write the name of the electrolyte used in fuel cell.

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  18. What is the overall electrochemical reaction taking place in rusting?

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  19. Out of zinc and tin which one protects iron better even after cracks a...

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  20. Define corrosion. What is the chemical formula of rust ?

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