Arrange `K^(+), Zn^(2+), H^(+), Cu^(2+)` ions in order of their tendency to be liberated at cathode.
`[E_(cu^(2+)|Cu)^(@)=+0.34V, E_(2H^(+)|H_(2))^(@)=0.00V`,
`E_(Zn^(2+)|Zn)^(@)=-0.76V E_(K^(+)|K)^(@)=-2.93V]`

Arrange Ag^(+), Zn^(2+), H^(+) and Na^(+) in order of their tendency to be liberated at cathode. ["Given : "E_(Ag^(+)|Ag)^(@)=+0.80V, E_(Zn^(2+)|Zn)^(@)=-0.76V, E_(2H^(+)|H_(2))^(@)=0.00V, E_(Na^(+)|Na)^(@)=-2.17V]

Arrange Al, Cd, Pb & Zn in order of increasing chemical activity. Given : E_(Al^(3+)|Al)^(@)=-1.66V , E_(Cd^(2+)|Cd)^(@)=-0.402V," "E_(Pb^(2+)|Pb)^(@)=-0.126V, E_(Zn^(2+)|Zn)^(@)=-0.76V.

Under standard conditions, which one of the reactions is not feasible (E_(Ni^(2+)|Ni)^(@)=-0.25V, E_(Cd^(2+)|Cd)^(@)=-0.4V, E_(Fe^(2+)|Fe)^(@)=-0.44V, E_(cu^(@+)|Cu)^(@)=+0.34V) -

Predict whether the reaction is feasible or not Cu^(2+)(aq)+Fe(s)rarrCu(s)+Fe^(2+)(aq),E_(Cu^(2+)|Cu)^(@)=+0.34V and E_(Zn^(2+)|Zn)^(@)=-0.76V

Find the equilibrium constant for the reaction: Cu^(2+)+In^(2+)hArr Cu^(+)+In^(3+) Given : E_(Cu^(2+)|Cu^(+))^(@)=0.15V, E_(In^(2+)|In^(+))^(@)=-0.4V, E_(In^(3+)|In^(+))^(@)=-0.42V

Explain why the stability of Cu^(+) io in aqueous solution is lower Cu^(2+) ion . E_(Cu^(2+)|Cu)^(@)= +0.34 "V & "E_(Cu^(+)|Cu)^(@)= +0.52 V

Represent symbolically the galvanic cells in which the following reaction occurs. Calculate the standard electromotive forces of the cells : (1) Fe+CuSO_(4)rarr FeSO_(4)+Cu Given : E_(Fe^(2+)|Fe)^(@)=-0.44V, E_(Sn^(2+)|Zn)^(@)=-0.14V , E_(Cu^(2+)|Cu)^(@)=0.34V, E_(Zn^(2+)|Zn)^(@)=-0.76V , E_(H^(+)|(1)/(2)H_(2))^(@)=0.00V .

Represent symbolically the galvanic cells in which the following reaction occurs. Calculate the standard electromotive forces of the cells : (2) Fe+Sn^(2+)rarr Fe^(2+)+Sn Given : E_(Fe^(2+)|Fe)^(@)=-0.44V, E_(Sn^(2+)|Zn)^(@)=-0.14V , E_(Cu^(2+)|Cu)^(@)=0.34V, E_(Zn^(2+)|Zn)^(@)=-0.76V , E_(H^(+)|(1)/(2)H_(2))^(@)=0.00V .