NTA Abhyas NEET2020ChemistryElectrochemistryPractice
If for the given reaction taking place at 25 ° C in a cell is, 1 2 Cu s + 1 2 Cl 2 g → 1 2 Cu 2 + + Cl − having standard e.m.f. of 1.02 v o l t s . Calculate standard free energy change.
Options
- A- 98430 J
- B98430 J
- C96500 J
- D- 96500 J
Correct answer
A. - 98430 J
Step-by-step solution
The relation between free energy change and standard e.m.f. is given by Δ G = - n F E ° Δ G = - 1 × 96500 × 1.02 ; Δ G = - 98430 .