Which of the following rection(s) is (are) involved in the rustin of iron ?

Options

A. `Fe_((s)) rarr Fe_((aq.))^(2+) + 2e`
B. `O_(2(g)) + 4H_((aq.))^(+) + 4e rarr 2H_(2)O_(l)`
C. `2Fe_((s)) + O_(2(g)) + 4H_((aq.))^(+) rarr 2Fe_((aq.))^(2+) + 2H_(2)O_((l))`
D. `Fe^(2+) + 2e rarr Fe_((s))`

Answer

A, B, C