AIIMS2010ChemistryElectrochemistry
For the electrochemical cell, M |M⁺ | X⁻ | X , E^ (M⁺ M )=0.44 ~V and E^ (X X⁻ )=0.33 ~V . From this data one can deduce that
Options
- AM+X M⁺+X⁻ is the spontaneous reaction
- BM⁺+X⁻ M+X is the spontaneous reaction
- CE_ cell =0.77 ~V
- DE_ cell =-0.77 ~V
Correct answer
B. M⁺+X⁻ M+X is the spontaneous reaction
Step-by-step solution
M⁺+X⁻ M+X is spontaneous because for the cell represented by M |M⁺ | X | X , the value of E^ is positive i.e. (0.44-0.33) V =0.11 ~V .