Question

Why Mg corrodes in both acidic and alkaline oxygen deficient conditions, whereas Fe does not corrode in alkaline oxygen deficient condition? Mg2++ 2e→ Mg, E0= -2.36 V, Fe2++ 2e→Fe, E0= -0.44 V, H++e→½H2, E0=0V

Answer 1

Answer:

because it is amphoteric as well as alkali

Answer 2

The Mg corrodes in both acidic and alkaline oxygen deficient conditions alkaline oxygen deficient condition is 4.1.

Explanation:

• Magnesium is more reactive than iron.
• It oxidize more readily than iron. So the nail does not trust.
• Thus means it oxidize more than copper it rusts faster than nail alone.

• Magnesium and its alloys are highly susceptible to galvanic corrosion, because magnesium has the lowest standard potential of all the engineering metals as illustrated in table  corrosion can also occur between two different phase.