question_answer

Three iron sheets have been coated separately with three metals (A, B and C) whose standard electrode potentials are given below. Metal      A                   B                             C                             Iron -0.46V                       -0.66V                   -0.20V                   - 0.44 V Identify in which case rusting will take place faster when coating is damaged.

Answer:

                Rusting of iron will occur faster when coated with metal C because it is placed above iron in the activity series. Iron will take part in redox reaction and not the metal C.