JEE Advanced Chemistry: Electrochemistry Practice Questions

12 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

Q1.
$What is the oxidation state of manganese in MnO4-?$
Easy
Q2.
$What is the value of the standard cell potential for a Daniel cell?$
Easy
Q3.
$Which law relates the mass of a substance deposited at an electrode to the quantity of electricity passed?$
Easy
Q4.
$A current of 0.5 A is passed through a solution of copper sulfate for 20 minutes. Calculate the mass of copper deposited at the cathode.$
Medium
Q5.
$The molar conductivity of a 0.025 M methanoic acid solution is 46.1 S cm2 mol-1. Calculate the degree of dissociation if the limiting molar conductivity is 404.$
Medium
Q6.
$For the reaction 2Fe3+ + Sn2+ yields 2Fe2+ + Sn4+, the standard cell potential is 0.617 V. Calculate the Gibbs free energy change.$
Medium
Q7.
$Calculate the potential of a hydrogen electrode at pH 10.$
Medium
Q8.
$For the cell reaction Zn + Cu2+ yields Zn2+ + Cu, the standard cell potential is 1.10 V. Calculate the equilibrium constant for the reaction at 298 K.$
Medium
Q9.
$T h e m o l a r co n d u c t i v i t y o f a 0.025 M so l u t i o n o f a w e ak a c i d H A i s 20 S c m^{2} / m o l . I f t h e l imi t in g m o l a r co n d u c t i v i t y o f H A i s 400 S c m^{2} / m o l, c a l c u l a t e t h e d i sso$
Hard
Q10.
$For the reaction 2Ag+ + Cu -> 2Ag + Cu2+, the standard Gibbs free energy change is -41.4 kJ/mol at 298 K. Calculate the equilibrium constant for the reaction.$
Hard
Q11.
$Calculate the standard cell potential for the reaction Zn + Cu2+ -> Zn2+ + Cu, given that the standard reduction potentials for Zn2+/Zn and Cu2+/Cu are -0.76 V$
Hard
Q12.
$A current of 10 A is passed through a molten electrolyte of AlCl3 for 965 seconds. Calculate the mass of aluminum deposited at the cathode.$
Hard

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