Question

why do crystals of ferrous sulphate turn brown when exposed to air​

Answer 1

Answer:

hi buddy

Explanation:

buddy its bcoz of rusting metals react with air and atmospheric moisture and forms brownish rust

hope this helps u

glad to help u

Answer 2

Explanation:

the metal were react with air to form oxide on the surface of the metal to produce brownish colour it is also called rusting

hope this will helpful for you