Question

An example of double salt is:

• A. Cuprammonium sulphate
• B. Mohr’s salt
• C. Potassium ferricyanide
• D. Cobalthexammine chloride

Answer 1

The correct option is B Mohr’s salt

Ferrous Ammonium Sulphate (also called Mohr’s salt) is a light green color sand like crystalline solid.
Mohr’s salt is a double salt which contain more than one simple salt. It undergoes complete dissociation in aqueous solutions. Mohr’s salt dissociates into $F{e}^{2+},N{H}_4^{+},S{O}_4^{2-}$ ions and gives their individual chemical test.