ElectrochemistryHard
Question
If Fe3+ + Y4- ⇋ FeY-; Kf = 1.3 × 1025
Fe2+ + Y4- ⇋ FeY2-; Kf = 2.1 × 1014
and Fe3+ + e- ⇋ Fe2+; E- = + 0.77 V
E- for Y- + e- → FeY2-
Fe2+ + Y4- ⇋ FeY2-; Kf = 2.1 × 1014
and Fe3+ + e- ⇋ Fe2+; E- = + 0.77 V
E- for Y- + e- → FeY2-
Options
A.0.13 V
B.- 0.636 V
C.+0.68 V
D.1.41 V
Solution
For FeY- → FeY2-, the change
Fe3+ + e- → Fe2+
E-Fe3+|FeY2|FeY-
E-Fe|Fe2+ +
log 
= 0.77 +log 
= 0.77 - 0.64 = 0.13V
Fe3+ + e- → Fe2+
E-Fe3+|FeY2|FeY-
E-Fe|Fe2+ +
log = 0.77 +
log = 0.77 - 0.64 = 0.13V Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
During electrolysis of water the volume of O2 Liberated is 2.24 dm3. The volume of hydrogen liberated, under same condit...The molar conductivities ∧oNaOAc and ∧oHCl at infinite dilution in water at 25oC are 91.0 and 426.2 S cm2/mo...The cell potential for the voltaic cell depicted below is 0.109V under standard conditions ; Pb(s)| Pb2+(aq.)||Ni2+(aq.)...During the process of electrolytic refining of copper, some metals present as impurity settle as ′anode mud′...A student made the following observations in the laboratory:(I) Clean copper metal did not react with 1 M – Pb(NO3)2 sol...