Question

Small copper piece is dipped in acid containing tank is a example of

a) oxygen absoption mechanism

b) atmospheric corrosion

c) hydrogen evolution corrosion

d) none​

Answer 1

Answer:

d. none.. its an electrolyte.. not sure

Answer 2

Answer:

A small copper piece dipped in an acid-containing tank is an example of hydrogen evolution corrosion.

Explanation:

As tanks are mostly made up of steel or iron.

So, when a small copper piece is dipped in an acid-containing tank,

Then the steel tank acts as anode and small copper piece act as cathode.

The portion of the steel tank which is in contact with copper is corroded with loss of two electrons, as shown in the reaction:      

• Fe →  Fe²⁺ + 2e⁻

The electrons flow through the metal from anode to cathode.

At cathode, H⁺ ions of acidic solution are eliminated as hydrogen gas, as shown in the reaction

• 2H⁺  +  2e⁻  → H₂ ( gas)

RESULT: A small copper piece dipped in an acid-containing tank is an example of hydrogen evolution corrosion.