Electrochemical Cells: JEE Questions & Solutions

For a closed circuit Daniell cell, which of the following plots is the accurate one at a given temperature ?

Consider the following reduction processes: Al³⁺ + 3e⁻ → Al(s), E^° = -1.66 V Fe³⁺ + e⁻ → Fe²⁺, E^° = +0.77 V Co³⁺ + e⁻ → Co²⁺, E^° = +1.81…

Given below are two statements: Statement (I): Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure…

In the above diagram, the standard electrode potentials are given in volts (over the arrow). The value of E^°_(FeO₄²⁻/Fe²⁺) is:

Standard electrode potentials for a few half-cells are mentioned below: Half-cell Standard Electrode Potential Cu²⁺ / Cu +0.34 V Zn²⁺ / Zn…

For the given cell: Fe²⁺(aq) + Ag⁺(aq) → Fe³⁺(aq) + Ag(s) The standard cell potential of the above reaction is given. The standard…

Which of the following statements is not correct about rusting of iron?

The equilibrium constant for the reaction: Zn(s) + Sn²⁺(aq) ⇌ Zn²⁺(aq) + Sn(s) is 1 × 10²⁰ at 298 K. The magnitude of standard electrode…

The standard reduction potentials at 298 K for the following half cells are given below: NO₃⁻ + 4H⁺ + 3e⁻ → NO(g) + 2H₂O, E⁰ = 0.97 V…

The standard reduction potentials at 298 K for the following half cells are given below: NO₃⁻ + 4H⁺ + 3e⁻ → NO(g) + 2H₂O E⁰ = 0.97 V V²⁺ +…

The reaction 1/2 H₂(g) + AgCl(s) ⇌ H⁺(aq) + Cl⁻(aq) + Ag(s) occurs in which of the given galvanic cells?

FeO₄²⁻ + 2.2 V → Fe³⁺, Fe³⁺ + 0.7 V → Fe²⁺, Fe²⁺ -0.45 V → Fe°. E^°_(FeO₄²⁻/Fe²⁺) is x × 10⁻³ V. The value of x is:

In an electrochemical reaction of lead, at standard temperature, if E^°(Pb²⁺/Pb) = m volt and E^°(Pb⁴⁺/Pb) = n volt, then the value of…