Differentiate between electrolytic cells and galvanic cells

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Reference no: EM133068445

Electrochemistry

Part - A Questions & Answers

Question 1. Differentiate between electrolytic cells and galvanic cells?

Question 2. What is single electrode potential?

Question 3. Define EMF of a cell.

Question 4. Distinguish between reversible and irreversible cells giving one example for each.

Question 5. What is the role of salt bridge in galvanic cells?

Question 6. Suggest a method to determine the electrode potential of zinc.

Question 7. Why can glass electrode not be used for a solution of high alkalinity?

Question 8. What are reference electrodes? Give two examples.

Question 9. Mention any two application of EMF measurement.

Question 10. Write down the formulation of the standard hydrogen electrode. (OR)
What is a primary reference electrode? Give one example with its electrode potential value.

Question 11. How will you predict the spontaneity of any redox system using emf?

Question 12. Distinguish between electrochemical series and galvanic series.

Question 13. What is an ion selective electrode?

Question 14. What are the conditions for an electrochemical cell to act as a standard cell?

Question 15. What is a secondary reference electrode? Give one example with its electrode potential value.

Question 16. Give two limitations of H₂electrode.

Question 17. Can we use a nickel spatula to stir a solution of copper sulphate? Given that E⁰_Ni2+/Ni= + 0.0025 & E⁰ = + 0.34V.

Question 18. A zinc rod is placed in 0.1M ZnSO₄ solution at 2980K. Write the electrode reaction and calculate the potential of the electrode. E⁰_Zn2+/Zn = - 0.76V.

Question 19. Zinc reacts with dilute H2SO4 to give hydrogen but silver does not. Explain given that
E⁰_Ag+/Ag = + 0.080V and E⁰ _Zn2+/Zn = - 0.76V.

Question 20. Calculate the reduction potential of lead electrode in conduct with a solution of 0.018MPb²⁺ ions (std. reduction potential [E0] = - 0.13V.

Question 21. What are the advantages of conductometric titrations?

Question 22. Why does glass electrode not be used for a solution of high alkalinity?

Question 23. What is Conductometric titration?

Question 24. What are the conditions for a cell to be reversible?

Question 25. What are the factors which control the potential of a Daniel cell?

PART B

Question 1. Describe SHE and SCE. Explain its use in the determination of single electrode potential.

Question 2. How emf of an unknown cell is determined by poggendorff's compensation method?

Question 3. Derive Nernst equation and mention its applications.

Question 4. What are reversible and irreversible cells? Illustrate with examples.

Question 5. What is electro chemical series? Give its application with suitable example.

Question 6. Give an account on conductometric titrations.

Question 7. What is potentiometric titration? Give an account on potentiometric redox titration.

Question 8. Give an account on potentiometric Precipitation titration.

Question 9. Describe the determination of pH of a solution using glass electrode.

Question 10. Briefly discuss the ion selective electrodes.

Question 11. A zinc rod is placed in 0.1 M solution of zinc sulphate at 25°C. Assuming that the salt is dissociated to the extent of 95% at this dilution. Calculate the potential of the electrode at this temperature. E°= -0.76V.

Question 12. Calculate EMF of the cell at 25°C. Zn/Zn²⁺ (0.1) //Ag⁺ (0.1M) / Ag E_cell at 25°C=1.56V.

Reference no: EM133068445

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