Based on Reference Table Adv-10, Standard Electrode Potentials, which half-cell has a lower reduction potential than the standard hydrogen half-cell? 1.
Cu2+ + 2e + Cu(s)
2
Fe2+ + 2e Fe(s)
3
12(s) + 2e-21-
Cl2(g) + 2 + 2C1

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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

b) solid

its a type of rock

answerlinnaeus;

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )