NEETChemistryGeneral Principles and Processes of Isolation of Metals
Why is an external emf of more than 2.2 V required for the extraction of Cl 2 from brine? (Mark the closest option)
Options
- AValue of ∆G ⊖ is + 422kJ. Using the equation ∆G ⊖ = – nFE ⊖ the value of E ⊖ comes out to be –2.2V. Therefore
- BThe extraction of Cl 2 from brine is an endothermic process.
- CThe extraction of Cl 2 from brine is a slow reaction.
- DThe extraction of Cl 2 from brine is a highly exothermic process.
Correct answer
A. Value of ∆G ⊖ is + 422kJ. Using the equation ∆G ⊖ = – nFE ⊖ the value of E ⊖ comes out to be –2.2V. Therefore
Step-by-step solution
Correct Option is : (A) Value of ∆G ⊖ is + 422kJ. Using the equation ∆G ⊖ = – nFE ⊖ the value of E ⊖ comes out to be –2.2V. Therefore extraction of Cl 2 from brine will require an external emf of greater than 2.2V.