MHT CET202521 Apr 2025Morning ShiftChemistryElectrochemistryActual
Select false statement from the following regarding electrochemical cell.
Options
- AStandard cell potential of electro chemical cell is an intensive property.
- BElectrode potential depends on concentration of salt solution is in contact with electrode.
- CStandard free energy change of cell is an intensive property.
- DElectrical work done in galvanic cell is equal to decrease in Gibb's energy.
Correct answer
C. Standard free energy change of cell is an intensive property.
Step-by-step solution
Standard cell potential is an intensive property since it remains constant regardless of system size or material quantity, making statement A true. Electrode potential depends on solution concentration through the Nernst equation, E = E^ - RT nF Q , confirming statement B as true. Standard free energy change , G^ = -nFE^ _ cell , is extensive because n scales with reaction stoichiometry, rendering statement C false. Electrical work in a galvanic cell equals the decrease in Gibbs energy per W_ elec,max = - G , verif