What is double salt?

Double-salt meaning A salt that crystallizes from an aqueous solution of a mixture of two different ions. The mineral dolomite (CaMg(CO3 )2 ), for example, is a double salt that crystallizes from a solution containing both calcium and magnesium ions. Double salts exist only as solids.

What is difference between double salt and complex salt?

Double salts and complex salts are two types of salts that are found in chemistry. The main difference between double salt and complex salt is that a double salt is a combination of two salt compounds whereas a complex salt is a molecular structure that is composed of one or more complex ions.

Why is alum a double salt?

Double salt contains more than one cation or anion. Therefore, alum is a double salt. Also, the metal ions in alum are surrounded by six water molecules each, to give the complete formula KAl(SO4)2.12H2O. , and hence, also called ‘dodecahydrate’.

What is the name of Mohr salt?

iron (II) ammonium sulfate
Mohrs salt

Which of following is double salt?

Double salts are crystalline salts which are composed of a mixture of two simple salts but with a different crystal structure. Double salts are ionisable when they are dissolved in water. So, Carnallite is a double salt. Therefore, option A is the correct answer.

Why Dil H₂so is added during preparation of Mohr’s salt?

Answer: Ferrous ions of Mohr’s salt undergo hydrolysis in aqueous solution. to prevent the hydrolysis, Conc. H2SO4 needs to be added to the Mohr’s salt crystals during the preparation of its standard solution.