Q. 22 B5.0( 1 Vote )

Consider the stan

Answer :

(i) Eo value of Cu is positive due to the fat that the sum of sublimation enthalpy an ionization enthalpy to convert Cu(s) to Cu2+ (aq) is so high that it is not balanced by its hydration enthalpy.


(ii) Eo value of Mn is more negative than expected value is due to the fact that after removal of electrons from 4s orbital, Mn2+ has d5 configuration which is a stable half-filled configuration.


(iii) d4 to d5 occurs in case of Cr2+ to Cr3+. It has means it has more stable t32g (half filled) whereas the configuration changes from d6 to d5 in case of Fe2+ to Fe3+.


Thus, Cr2+ is a stronger reducing agent than Fe2+


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

When a chromite oChemistry - Exemplar

Give reasonChemistry - Board Papers