ELECTRO CHEMISTRY

LINK FOR ELECTRO CHEMISTRY

1.	USE LINK   Calculate the emf of the cell at 25°C
2.	Calculate the equilibrium constant for the reaction at 25°C. Cu(s) + 2Ag+ (aq)<èCu2+ (aq) + 2Ag(s) The standard cell potential for the reaction at 25°C is 0.46V
3.	Calculate, ∆rG° for the reaction     [ –150, 540 kj]
4.	The emf. of the cell reaction 3Sn4+ + 2Cr ® 3Sn2+ + 2Cr3+ is 0.89V. Calculate ∆G° for the reaction[–515.310 kj]]
5.	How does molar conductivity vary with concentration for (i) weak electrolytes and (ii) for strong electrolytes? Give reasons for these variations
6.	The molar conductivity of 0.025M methanoic acid is 46.1 S cm–1. Calculate its degree of dissociation and dissociation constant. Given
7.	Write the cell reaction which occur in the lead storage battery (i) When the battery is in use (ii) When the battery is on charging
8.	Standard reduction potentials are as given below Arrange them in increasing order of reducing power
9.
10.	The density of Cu is 8.94 g cm–3. The quantity of electricity needed to plate an area 10 cm × 10 cm to a thickness of 10–2 cm using CuSO4 solution would be [Ans27172 C]
11.	What will be product during the electrolysis of aqueous solution of CuSO4 using platinum electrodes?

Electro chemistry
assignment 1