Answer the following questions that relate to electrochemical reactions. (a) Under standard conditions at 25˚C, Zn(s) reacts with Co2+(aq) to produce Co(s). (i) Write the balanced equation for the oxidation half reaction. (ii) Write the balanced net-ionic equation for the overall reaction. (iv) Calculate the standard potential, E˚, for the overall reaction at 25˚C.

0.48 V

Explanation:

Zn(s) > Zn^2+(aq) + 2e. Oxidation half equation (-0.76V)

Co^2+(aq) + 2e> Co(s). Reduction half equation (-0.28)

Zn(s) + Co^2+(aq) > Zn^2+(aq) + Co(s) overall redox equation

Zinc is the anode while cobalt is the cathode.

E°cell= E°cathode - E°anode

E°cell= -0.28-(-0.76)= 0.48 V

that's what i got you can count the number of atoms

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock