Question

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`

Answer 1

Correct Answer - C
SRP of Zn is less than SRP of Hydrogen. Hence Zn acts as cathode.