AIIMS2018ChemistryElectrochemistry
Cell equation : A+2 B⁺ A²⁺+2 BA²⁺+2 e⁻ A ; E^ =+0.34 ~V and ₁₀ K=15.6 at 300 ~K for cell reactions. Find E^ for B⁺+e⁻ B . [ . Given : 2.303 R T n F =0.059 at .300 ~K ]
Options
- A0.80 ~V
- B1.26 ~V
- C-0.54 ~V
- D+0.94 ~V
Correct answer
A. 0.80 ~V
Step-by-step solution
aligned & E_ cell ^ = 0.059 2 K & E_ B⁺ / B ^ -E_ A²⁺ / A ^ = 0.059 2 K aligned aligned & E_ B⁺ / B ^ -0.34 ~V = 0.059 2 15.6 & E_ B⁺ / B ^ =0.46+0.34=0.80 ~V aligned