Daily Life Application

Hi, there. Do you know what is the application of galvanic cell in our daily life. Well, feel free to read the article below.

Dental Filling Discomfort

Wow, it that amazing. What a great ideas. Besides, galvanic cell, the concepts of electrolysis also can be applied in our daily life. Do you want to know more? Let's click on this video. You also can try it at home if you want.

Energy Salt water

Torchlight

Have you ever wonder how does rusting occur?

Corrosion of metals means the spontaneous deterioration that most metals undergo due to chemical reactions with their environment, these reactions generally producing salts or oxides of the metals. Corrosion leads to grave loss of strength in metallic structures and machinery, and therefore is of immense economic and human importance.

In metals, corrosion generally occurs in an electrochemical way, via development of many tiny galvanic cells on the metal surface. Some parts of the metal surface act as anodic sites, where the metal gets converted to its cations in an oxidation process whereas some other parts of the metal surface, on the other hand, acts as cathodic sites (the tiny cathodes) where cathodic reactions takes place. The ions involved in the electrode reactions travel via the moist or aqueous surroundings of the metal, thereby completing the electrical circuit.

Do you know why beach houses corrode faster than inland houses?

During the rusting process, moist or water surrounding the metal acts as the medium to transfer the ions (salt bridge). The presence of salt speed up corrosion rate water because salt water greatly facilitates ionic conduction.

Did you notice that water pipe gets corroded particularly at the joints?

In metal, the anodic sites are those areas that have low oxygen concentration. For examples, crevices, contact areas between part and parts covered with dirt. Cathodic sites on the other hand, are those with high oxygen availability where oxygen would get reduced. 

Anodic sites are where metal is oxidized to ions which mean it is the part that is getting corroded. Hence, for any metal equipment it is easier to corrode at area which has low oxygen concentration.