NEET2023ChemistryElectrochemistryActual
The correct value of cell potential in volt for the reaction that occurs when the following two half cells are connected, is aligned & Fe _ ( aq ) ²⁺+2 e ⁻ Fe ( s ), E ^ =-0.44 ~V & Cr ₂ O ₇²⁻( aq )+14 H ⁺+6 e ⁻ 2 Cr ³⁺+7 H ₂ O , E ^0=+1.33 ~V & aligned
Options
- A+0.01 ~V
- B+0.89 ~V
- C+1.77 ~V
- D+2.65 ~V
Correct answer
C. +1.77 ~V
Step-by-step solution
aligned E _ cell ^0 & = E _ cathode - E _ anode & =1.33-(-0.44) & =1.33+0.44=+1.77 ~V aligned