Electrochemistry questions
1808 published questions with worked solutions.
- The e.m.f. of galvanic cell, with electrode potentials of Zn = + 0.76 V and that of Cu = −0.34 V, is ________
- Nernst equation for Zn^ 2+ _ (aq) + 2e^- Zn_ (s) is E_ (Zn^ 2+ /Zn) = _________ [MH CET 2008]
- The e.m.f. of the cell Zn|Zn^ 2+ (0.01 ,M)||Fe^ 2+ (0.001 ,M)|Fe at 298 K is 0.2905 then the value of equilibrium constant for...
- The emf of the following cell, Zn|ZnSO_4(1 ,M)||H^+(1 ,M)|H_ 2(g) (1 ,atm)|Pt is 0.769 volts. The reduction potential of Zn...
- The emf of a Daniel cell at 298 K is E_1: Zn|ZnSO_4(0.01 ,M)||CuSO_4(0.1 ,M)|Cu . When the concentration of ZnSO_4 is 1.0 M and...
- The tendency of an electrode to lose electrons is known as _________ [J & K CET 2005]
- Given below are the half-cell reactions: Mn^ 2+ + 2e^- Mn ; E° = −1.18 V and Mn^ 3+ + e^- Mn^ 2+ ; E° = +1.51 V. The E° for 3Mn^...
- EMF of a cell in terms of reduction potential of its left and right electrodes is _______ [AIEEE 2002]
- In the cell Zn|Zn^ 2+ (1 ,M)||H^+(1 ,M)|H_ 2(g) |Pt Zn electrode is replaced by Cu electrode. The cell potential will __________...
- For a cell reaction involving a two-electron change, the standard e.m.f. of the cell is found to be 0.295 V at 25℃. The...
- Standard electrode potential for Sn^ 4+ |Sn^ 2+ couple is +0.15 V and that for the Cr^ 3+ |Cr couple is −0.74 V. These two...
- Consider the cell Cr|Cr^ 3+ (1 ,M)||Fe^ 2+ (1 ,M)|Fe , E^ _ Cr = -0.740 V; E^ _ Fe = -0.440 V, G^ for the above cell is ________...
- Given E^ _ Cr^ 3+ /Cr = -0.72 V, E^ _ Fe^ 2+ /Fe = -0.42 V. The potential for the cell Cr|Cr^ 3+ (0.1 ,M)||Fe^ 2+ (0.01 ,M)|Fe is...
- Given E^ _ Fe^ 3+ /Fe = -0.036 V, E^ _ Fe^ 2+ /Fe = -0.439 V. The value of standard electrode potential for the change, Fe^ 3+ _...
- The E^ _ cell value for Pt, H_2|H^+||Ag^+|Ag is _______ [E^ _ Ag/Ag^+ = -0.799 V]
- The electrode potentials for Cu^ 2+ _ (aq) + e^- Cu^+_ (aq) and Cu^+_ (aq) + e^- Cu_ (s) are +0.15 V and +0.50 V respectively....
- The standard redox potentials for the reactions Mn^ 2+ + 2e^- Mn and Mn^ 3+ + e^- Mn^ 2+ are −1.18 V and 1.51 V respectively....
- The cell reaction of a cell is Mg + Cu^ 2+ Mg^ 2+ + Cu (Given E_ Mg^ 2+ /Mg = -2.37 V, E_ Cu^ 2+ /Cu = 0.337 V). The emf of the...
- What will be the emf for the given cell? Pt|H_2(P_1)|H^+_ (aq) |H_2(P_2)|Pt [AIEEE 2002]
- The following cell, Zn|Zn^ 2+ (1 ,M)||Cu^ 2+ (1 ,M)|Cu ; (E^ _ cell = 1.10 V), was allowed to be completely discharged at 298 K....
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