Home
Class 12
CHEMISTRY
From the following E^(o) value of helf c...

From the following `E^(o)` value of helf cells:
(i) `A+e^(-)rarr A ^(-) , E^(o) = -0.824 V`
(ii) `B^(-)+e^(-)rarr B ^(2-) , E^(o) = +1.25V`
(iii) `C^(-)+2e^(-)rarr C ^(3-) , E^(o) = -1.25V`
(iv) `D^(-)+2e^(-)rarr D ^(2-) , E^(o) = +0.68V`
What combination of two half cells would result is a cell with the largest cell potential?

A

(ii)&(iii)

B

(ii)&(iV)

C

(i)&(iii)

D

(i)&(iv)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

The standard reduction potential for half reactions for four different elements. A, B, C and D are: (i) A_(2) + 2e^(-) rarr 2A^(-), E^(@) = + 2.85 V (ii) B_(2) + 2e^(-) rarr 2B^(-), E^(@) = + 1.36 V (iii) C_(2) + 2e^(-) rarr 2C^(-), E^(@) = + 1.06 V (iv) D_(2) + 2e^(-) rarr 2D^(-), E^(@) = + 0.53 V The strongest oxidising reducing agents smong these :

Half cell reactions for some electrodes are given below I. A + e^(-) rarr A^(-) , E^(@) = 0.96V II. B^(-) + e^(-) rarr B^(2-) , E^(@) = -0.12V III. C^(+) + e^(-) rarr C, E^(@) =+0.18V IV. D^(2+) + 2e^(-) rarr D, E^(@) = -1.12V Largest potential will be generated in which cell?

Goven : (i) CU^(2+) + 2e^- rarr Cu, E^@ = 0.337 V (ii) Cu^(2+) +e^- rarr Cu^(+) , E^2=0.1 5 3 V .

Consider following half cell reaction and corresponding standard (reduction) electrode potentials. I. A+e^(-)rarrA:E^(@)=-24V II. B^(-)+e^(-)rarrB^(2-):E^(@)=+1.25V III. C^(-)+2e^(-)rarrC^(3-):E^(@)=-1.25V IV. D+2e^(-)rarrD^(2-):E^(@)=+0.68V V. E+4e^(-)rarrE^(-4):E^(@)=0.38V . If every ion has concentration 1 M in the cell the largest cell potential at 298K is

Pb^(+2) + 2e^(-) rarr Pb(s), E^(@) = -0.13V Sn^(+2) + 2e^(-) rarr Sn(s), E^(@) = - 0.16V Ni^(+2) + 2e^(-) rarr Ni(s), E^(@) = -0.25V Cr^(+3) + 3e^(-) rarr Cr(s), E^(@) = -0.74V Based on the above data, the reducing power of Pb, Sn, Ni and Cr is in the order

Consider following half cell reaction and corresponding standard (reduction) electrode potentials. I. A+e^(-)rarrA:E^(@)=-24V II. B^(-)+e^(-)rarrB^(2-):E^(@)=+1.25V III. C^(-)+2e^(-)rarrC^(3-):E^(@)=-1.25V IV. D+2e^(-)rarrD^(2-):E^(@)=+0.68V V. E+4e^(-)rarrE^(-4):E^(@)=0.38V . Cell with the largest cell potential is