1. The mineral acid used in preparation of Mohrs salt is
a. dil. HCl
b. conc. HCI
c. dil. H2SO4
d. conc. H2SO4
Answers
Answer:
Sulfuric acid.
Mohr's salt is used in analytical chemistry as the preferred source of ferrous ions due to the solid's extended shelf life and resistance to oxidation. Sulfuric acid is often added to solutions using ferrous ammonium sulfate in order to reduce the oxidation of the ferric iron.
Explanation:
Dilute sulphuric acid is added to prevent the hydrolysis of ferrous sulphate or Mohr's salt.
Ferrous Ammonium Sulphate is also called Mohr’s salt a light green color sand like crystalline solid. It is a hazardous substance and preparation of ferrous ammonium sulfate is carried out from equimolar mixture of hydrated ferrous sulphate and ammonium sulphate in water; containing a little of sulphuric acid.
Sulfuric acid H₂SO₄
Mohr's salt is used in analytical chemistry as the preferred source of ferrous ions due to the solid's extended shelf life and resistance to oxidation. Sulfuric acid is often added to solutions using ferrous ammonium sulfate in order to reduce the oxidation of the ferric iron.