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Consider a voltaic cell based on these h...

Consider a voltaic cell based on these half - cell reactions
`Ag^(+)(aq)+e^(-)rarrAg(s): E^(@)=+0.80V`
`Cd^(+2)(aq)+2e^(-)rarrCd(s), E^(@)=-0.40V`
identify the anode and give the voltage of this cell under standard condition.

A

`Ag,E_(cell)^(@)=0.40 V`

B

`Ag, E_(cell)^(@)=2.00 V`

C

`Cd, E_(cell)^(@)=1.20V`

D

`Cd, E_(cell)^(@)=2.00 V`

Text Solution

Verified by Experts

The correct Answer is:
C
SRP of Zn is less than SRP of Hydrogen. Hence Zn acts as cathode.
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