Question

Zn is more electropositive than fe. so it should get corroded faster than fe. but it does not happen. instead it is used to galvanize iron. explain why does it happen so?

Answer 1

Explanation:

Zinc has most negative electrode reduction potential than iron. This implies that zinc will be more reactive than iron hence when used to galvanize iron it will be sacrificed in place of iron hence protecting the iron metal from being corroded. this idea forms the basis for sacrificial protection.