IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry - electochemistry,a q to find half cell potential

001sri

the standard reduction potential's of half cell OClminus/Clminus,OHminus and Cl2/Clminus are 0.94 and +1.36 volt respectively.what is the reduction potential of half cell whose cell rxn is represented as

2OCl^-+2H₂O +2e^- ------->Cl₂+4OH^-

^(a)0.21

(b)0.52

(C)1.04

(d)2.1

rahul_c

i hope my answer is correct

IN THE GIVEN HALF CELL REACTION 2-MOLES OF OCl- ARE USED
SO FOR A E1=2*0.94=1.88

IN THE PRODUCT WE ARE GETTING 1-MOLE OF CHLORINE
E2=1.36
E FOR THE OVERALL REACTION=E1-E2=1.88-1.36=0.52

with regards

smriti.mathur

In the reaction of Cl₂ and OH^-, the ptoducts are OCl^-and Cl^- ions. In the given question, the given reaction does not include Cl^- ions, whereas the E₀ values of two half cells OCl^- , Cl^-, OH^- and Cl₂, Cl^- are given.If we combine these two half cells, the overall reaction will not be as given in the question.
Please check the question.

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