InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
`E^(Theta)` values for the couples `Cr^(3+)//Cr^(2+)` and `Mn^(3+)//Mn^(2+)` -0.41 and +1.51 volts respectively. Considering these values select the correct option from the following statementsA. `Cr^(2+)` acts as a reducing agent and `Mn^(3+)` acts as an oxidising agent in their aqueous solutions.B. `Cr^(2+)` (aq). Is more stable than `Cr^(3+)(aq.)`C. `Mn^(3+)(aq)` is more stable than `Mn^(2+)(aq.)`D. None of these. |
|
Answer» Correct Answer - A `Cr^(3+)+e^(-)toCr^(2+),E^(Theta)=-0.41` votls and `Mn^(3+)+e^(-)toMn^(2+)+E^(Theta)=+1.51`volts this shows that `Cr^(2+)` is unstable and has a tendency to acquire more stable `Cr^(3+)` state by acting as a reducing agent. On the other hand `Mn^(3+)` is unstable and is reduced to more stable `Mn^(2+)` state. |
|