Electrochemistr...

Small quantities of solutions of compounds TX , TY and TZ are put into separate test tubes containing X ,Y and Z solutions. TX does not react with any of these. TY reacts with both X and Z. TZ reacts with X. The decreasing order of ease of oxidation of the anions X^-, Y^-, Z^- is

The standard reduction potentials at 298 K for the following half-cell reactions are given
Zn²⁺ (aq) + 2e^- ⇌ Zn(s); -0.762 V
Cr³⁺ (aq) + 3e^- ⇌ Cr(s); -0.74 V
2H⁺ (aq) + 2e^- ⇌ H₂ (g); +0.00 V
Fe³⁺ (aq) + e^- ⇌ Fe²⁺ (aq); +0.77 V
Which one of the following is the strongest reducing agent ?

Electrode potential of hydrogen electrode is...volt.

The relationship between Gibbs' free energy change (∆G) and emf(E)of a reversible electrochemical cell is given by

Zn²⁺ → Zn(s); E^o = -0.76 V;
Cu²⁺ → Cu(s); E^o = -0.34 V
Which of the following is spontaneous?

The cell, Zn | Zn²⁺ (1 M) || Cu²⁺ (1 M) | Cu (E^o_cell = 1.10V), was allowed to be completely discharged at 298 K. The relative concentration of Zn²⁺to

Given standard electrode potentials
Fe²⁺ + 2e^- → Fe E^o = - 0.440V
Fe³⁺ + 3e^- → Fe E^o = - 0.036 V
the standard electrode potential (E^o) for
Fe³⁺ + e^- → Fe²⁺ is

The standard E^o_red values of A, B and C are + 0.68 V, - 2.54 V, - 0.50 V respectively. The order of their reducing power is

EMF of hydrogen electrode in term of pH is (at 1 atm pressure)