Question

y we should purify iron​

Answer 1

Answer:

Explanation:

In natural waters iron is most often encountered in the form of ions Fe2+ and Fe3+, as well as in the form of organic and inorganic compounds (colloids, suspended solids, etc.).

In surface waters iron can be found as an impurity mostly by organic complexes (humanness), as well as in forms of colloidal and finely-divided suspensions.

In ground waters, in the absence of dissolved oxygen, it usually resides in the form of Fe2+ ions.

Dissolved iron represents an aesthetically problem rather than a danger to health. Iron can be present in various forms in water. During heating, oxidization or chlorination, dissolved iron transforms from one form into  another, and precipitates.

Answer 2

Explanation:

the removal of impurities from crude metals. After extraction from raw materials, crude metals are between 96 and 99 percent principal metal, the rest being impurities. Crude metals cannot be used by industry at this stage because of inferior physical, chemical, and mechanical properties.