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Calculate the equivalent conductivity of 1M H2SO4 solution whose conductivity is 26
×10–2 ohm–1 cm–1
Predict whether the reaction
2Ag(s) + Zn2+ (aq) → 2Ag+ (aq) + Zn(s) is feasible or not.
Using the electrochemical series, predict whether zinc and silver would react with dil.
H2SO4 or not.
Calculate the potential for each half cell and the total EMF at 25 °C for the cell
represented schematically as
Pb / Pb2+ (0.001 N) // Cl– (0.1 N) / Pt, Cl2 (1atm)
E0 Pb2+/Pb 0.126 V;
E0 Cl/2Cl- 1.358 V
The conductivity (specific conductance) of 0.01 M KCl solution at 25 °C is 1.41×10–3 S
cm–1. The resistance of a cell containing this solution is 8.30 ohms. What is the cell
constant of the cell?
Using the electrochemical series, predict whether zinc and silver would react with dil.
H2SO4 or not.
The EMF of the cell Hg / Hg2Cl2 (s), KCl (satd) // H+ (unknown) with quinhydrone / Pt
is 0.264 volts at 25 °C. Find the pH of the solution if Ecalomel 0.2422V; E0Q 0.6996 V
Explain the construction and working of a nickel–cadmium battery. What are the
reactions in each half of the cell?
Explain the construction and working of a Lead acid battery/lead accumulator battery.
What are the reactions in each half of the cell?
At 25 °C, the EMF of the cell Pt, H2(1 atm)/H+(Unknown)//KCl(satd) /Hg2Cl2(s), Hg is 0.445
volts. Calculate the pH of the solution.
What is a fuel cell? Explain the underlying principle taking the example of an H2–O2 fuel
cell with a solid polymer electrolyte and an alkaline electrolyte.
Find the pH of a solution placed in a quinhydrone half cell which was coupled with a
standard calomel electrode. The EMF of the combined cell was determined to be 0.123
V at 25 °C. Ecalomel 0.2415 V; EQ00.6996 V
What is single electrode potential? Explain its origin. Explain the following.
(i) Notations and sign conventions of electrochemical cells.
(ii) Functions of a salt bridge
(iii) Different types of reversible electrodes
(iv) Construction and working of a calomel electrode
(v) Factors affecting the conductance of an electrolytic solution
What do you understand by a concentration cell? Derive an expression for the EMF of
the following cell.
Ag (Hg) c1 / AgNO3(soln) / Ag(Hg) c2
Explain the various applications of concentration cells.
What is an electrochemical series? Explain the various applications of the
electrochemical series.
Define corrosion. Why do metals corrode and what are the consequences of corrosion?
What is cathodic protection? Explain.
What are the Advantages and disadvantages of electroless plating?
Explain the ‘Pilling–Bedworth rule’.
What is the difference between chemical corrosion and electrochemical corrosion?
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Define corrosion. Why do metals corrode and what are the consequences of corrosion?
Explain the following
(i) Pitting corrosion
(ii) Stress corrosion
(iii) Galvanic corrosion
(iv) Caustic embrittlement
Explain the Galvanic series and Passivation
What do you mean by ‘dry corrosion’ or ‘chemical corrosion’? Explain the mechanism
with the help of a well-labelled diagram.
Explain the following (a) Concentration cell corrosion (b) Differential aeration
corrosion (c) Intergranular corrosion (d) Waterline corrosion
Illustrate the major Effects of Corrosion.
Explain the impressed current cathodic protection method to prevent corrosion.
Discuss the drop Corrosion or Corrosion under a block of wood, leaf, metal, or stone, with a
suitable diagram.
Discuss sacrificial anode cathodic protection. What is the condition for a metal to act as
a sacrificial anode?
Illustrate the major environmental factors that affect corrosion.
Write in detail the different Methods of Application of Metal Coatings.
Discuss in detail the different types of electrochemical corrosion.