Calculate the amount of Co (II) deposited on the surface of a cathode, if a constant current of 0.96 A for 28.4 minutes is passed through solution of Co (II). Assume that current efficiency is 90%. 

Write the advantages of coulometric titrations. 

Write the advantages of coulometric titrations. 

 A solution of Zn is electrolyzed for 30 s using a current of 1.0 mA. Calculate the mass of Zn plated on the electrode for the electrochemical reaction:
Zn²⁺ + 2e⁻ → Zn 

Describe concentration polarization. Give the importance of overvoltage. 

Give two applications of ion selective electrodes. 

Give two applications of ion selective electrodes. 

Discuss the factors which limit the accuracy of pH measurements. 

Discuss the factors which limit the accuracy of pH measurements. 

 At 298 K, the limited molar conductivities at infinite dilution of sodium benzoate, hydrochloric acid and sodium chloride are 8.24 × 10⁻³ S m² mol⁻¹, 4.26 × 10⁻² S m² mol⁻¹ and 1.26 × 10⁻² S m² mol⁻¹, respectively. Calculate the limiting molar conductivity of aqueous benzoic acid. 

 At 298 K, the limited molar conductivities at infinite dilution of sodium benzoate, hydrochloric acid and sodium chloride are 8.24 × 10⁻³ S m² mol⁻¹, 4.26 × 10⁻² S m² mol⁻¹ and 1.26 × 10⁻² S m² mol⁻¹, respectively. Calculate the limiting molar conductivity of aqueous benzoic acid. 

How is the conductance varied with concentration? Explain with the help of suitable examples. 

How is the conductance varied with concentration? Explain with the help of suitable examples. 

 Calculate the potential of the cell given below
Cu|Cu²⁺ (0.010 M)||Ag⁺|Ag(0.10M) 

Hint: use Appendix I for the standard electrode potential values.

 Derive an expression for the determination of an equilibrium constant using electrode potential measurement. 

 Derive an expression for the determination of an equilibrium constant using electrode potential measurement. 

 Critically examine the role human wall in the play "Ghashiram Kotwal".

The title of the poem "A Far Cry from Africa" is ambiguous and ironic. Comment.

 What is the significance of the title of the story "The Green Leaves"?

 What is the significance of the title of the story "The Green Leaves"?