Home
Class 12
CHEMISTRY
For the electrochemical cell, (M|M^(o+))...

For the electrochemical cell, `(M|M^(o+))||(X^(c-)|X),E^(c-)._((M^(o+)|M))=0.44V` and `E^(c-)._((X|X^(c-)))=0.334V`

A

`M+Xrarr M^(o+)+X^(c-)` is a spontaneous reaction.

B

`M^(o+)+X^(c-) rarr M+X` is the spontaneous reaction

C

`E^(c-)cell=0.77V`

D

`E^(c-)cell=-0.77`

Text Solution

Verified by Experts

The correct Answer is:
b
For reaction `:`
At anode `: X^(c-)rarr X+e^(c-),`
`E^(c-)._(red)=+0.334V(E^(c-)._(o x i d)=-0.034V)`
At cathode `: M^(o+)+e^(-) rarr M, " "E^(c-). (red)=0.44V`
`ulbar(M^(o+)+X^(c-)rarr M+X)`
`E^(c-)._(cell)=(E^(c-)._(red))_(c)-(E^(c-)._(red))_(a)`
`=0.44-0.334`
`0.106V`
Since `E^(c-)._(cell)` is positive, hence the reaction is spontaneous.
Promotional Banner

Similar Questions

Explore conceptually related problems

Find the value of AG^(@) at 25^(@)C for the following electrochemical cell. Cu|Cu^(2+)(1M)||Ag^(+)(1M)|Ag [Ec_(u)=+0.34V, E_(Ag)^(@)=+0.8V] F=96487C

Find K_(c) for the complex : [Ag(NH_(3))_(2)]^(o+)hArrAg^(o+)+2NH_(3) E^(c-)._((Ag^(o+)//Ag))=0.8V and E^(c-)._{[Ag(NH_(3))_(2)]^(o+)|Ag|NH_(3))=0.37V

If excess of Zn is added to 1.0M solution of CuSO_(4) , find the concentration of Cu^(2+) ions at equilibrium. Given :E^(c-)._((Zn^(2+)|Zn))=-0.76V E^(c-)._(cell)=(E^(c-)._((Cu^(2+)|Cu))=0.34V

The e.m.f. of the cell, Mg"|"Mg^(2+)(1M)"||"Pb^(2+)(1M)"|"Pb is [E^(@)(Pb^(2+)"|"Pb)=-0.14V, E^(@)(Mg^(2+)"|"Mg)=-2.37V]

Calculate the potential corresponding to the following cell. Given Pt|Co^(2+)(2.0M),Co^(3+)(0.01M)||Cr^(3+)(0.5M),Cr_(2)O_(7)^(2-)(4.0M),H^(o+)(1.5M)|Pt E^(c-)._(Co^(2+)|Co^(3+))=1.82V E^(c-)._(Cr_(2)O_(7)^(2-)|Cr^(3+))=+1.33V

The e.m.f. of the cell at 25^(@)C Cu"|"Cu^(2+)(0.01M)"||"Ag^(+)(0.1M)"|"Ag is [E^(@)(Cu^(2+)"|"Cu)=0.34V, E^(@)(Ag^(+)"|"Ag)=0.80V]

For the electrochemical cell : Zn "|"Zn^(2+)(1M)"||"H^(+)(1M)"|"H_(2)("atm") , Pt the e.m.f. of the cell has been found to be 0.76. The standard reduction potential of zinc is :

Calculate the potential of silver electrode in a saturated solution of AgBr(K_(sp)=6xx10^(-13)) containing 0.1 M KB r . E^(c-)._(Ag^(o+)|Ag)=0.80V.

For the cell reaction Fe(s)|Fe^(2+)(0.1M)"||"H^(+)(1M)|H_(3)"(1 atm)" , Pt E^(@)=0.44V . The cell e.m.f. is :