Home
Class 12
CHEMISTRY
The standard reduction potential E^(@) ...

The standard reduction potential `E^(@) ` for the half reactions are as :`E^(@)`
`Znrightarrow Zn^2+),E^(@) = +0.76V`
`Fe rightarrow Fe^(2+)+ 2e^(-), E^(@) = 0.41V`,
The emf for the cell reaction, `Fe^(2+)+ZnrightarrowZn^(2+) + Fe` is ,

A

`(-0.35V)`

B

`(+0.35V)`

C

`(+1.17V)`

D

`(-1.17V)`

Text Solution

AI Generated Solution

To find the emf (electromotive force) for the cell reaction \( \text{Fe}^{2+} + \text{Zn} \rightarrow \text{Zn}^{2+} + \text{Fe} \), we will follow these steps: ### Step 1: Identify the half-reactions The half-reactions involved in the cell reaction are: 1. Reduction of iron: \[ \text{Fe}^{2+} + 2e^- \rightarrow \text{Fe} \quad (E^\circ = +0.41 \, \text{V}) \] ...
Promotional Banner

Similar Questions

Explore conceptually related problems

The standard oxidation potential, E^(@) , for the reactions are given as: Zn rightarrow Zn^(2+) + 2e^(-) , E^(@) = +0.76V Fe rightarrow Fe^(2+) + 2e^(-) , E^(@) = +0.41V The emf for the cell : Fe^(2+) + Zn rightarrow Zn^(2+) + Fe

The standard oxidation potentials, , for the half reactions are as follows : Zn rightarrow Zn^(2+) + 2e^(-) , E^(@) = +0.76V Fe rightarrow Fe^(2+)+ 2e^(-), E^(@) = + 0.41 V The EMF for the cell reaction, Fe^(2+) + Zn rightarrow Zn^(2+) + Fe

The standard reduction potential E^(@) , for the half reaction are : {:(Zn rarr Zn^(2+) + 2e^(-),,,E^(@) = 0.76 V),(Cu rarr Cu^(2+) + 2e^(-),,,E^(@) = 0.34 V):} The emf for the cell reaction, Zn(s)+Cu^(2+) rarr Zn^(2+) + Cu(s) is :

The standard oxidation potentials, E^(@) , for the half reactions are as, Zn rarr Zn^(2+) + 2e^(-), " " E^(@) = + 0.76 volt Fe rarr Fe^(2+) + 2e^(-), " " E^(@) = +0.41 volt The emf of the cell, Fe^(2+) + Zn rarr Zn^(2+) + Fe is:

The standard reductino potentials E^(c-) for the half reactinos are as follows : ZnrarrZn^(2+)+2e^(-)" "E^(c-)=+0.76V FerarrFe^(2+)+2e^(-) " "E^(c-)=0.41V The EMF for the cell reaction Fe^(2+)+Znrarr Zn^(2+)+Fe is

The standard potential E^(@) for the half reactions are as : Zn rarr Zn^(2+) + 2e^(-), E^(@) = 0.76V Cu rarr Cu^(2+) +2e^(-) , E^(@) = -0.34 V The standard cell voltage for the cell reaction is ? Zn +Cu^(2) rarr Zn ^(2+) +Cu

The half reactions for a cell are Zn to Zn^(2+) + 2e^(-), E^(@) = 0.76 V Fe to Fe^(2+) + 2e^(-), E^(@) = 0.41 V The DeltaG^(@) (in kJ) for the overall reaction Fe^(2+) + Zn to Zn^(2+) + Fe is