Question

State the values of `E_(Ca//Ca^(2+))^circ, E_(Ni//Ni^(2+))^circ` and `E_(Cl^-//1/2Cl_2)^circ` if  `E_(Ca^(2+)//Ca)^circ` = −2.87 volts, `E_(Ni^(2+)//Ni)^circ` = −0.25 volts and `E_(1/2Cl_2//Cl^-)^circ` = +1.36 volts.

Answer 1

Given: `E_(Ca^(2+)//Ca)^circ` = −2.87 volts, 

`E_(Ni^(2+)//Ni)^circ` = −0.25 volts and

`E_(1/2Cl_2//Cl^-)^circ` = +1.36 volts

Required oxidation potentials:

`E_(Ca^(2+)//Ca)^circ` = +2.87 volts, 

`E_(Ni^(2+)//Ni)^circ` = +0.25 volts and

`E_(1/2Cl_2//Cl^-)^circ` = −1.36 volts