Question:

How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water ?

Updated On: Apr 13, 2024
  • 4
  • 5
  • 6
  • 10
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The Correct Option is B

Solution and Explanation

Double salt (such as Mohr salt) dissociate into simple substances or ions completely when dissolved in water. Mohr' salt is

FeSO4.(NH4)2SO4.6HzO{FeSO4 . (NH4)2SO4 . 6HzO}
FeSO4.(NH4)2SO4.6HzO>[Exces of ][water]Fe2++2NH4+2SO42+6H2O{FeSO4 . (NH4)2SO4 . 6HzO ->[{\text{Exces of }}][{\text{water}}] Fe^{2+} + 2NH4+ 2SO4^2- + 6H2O}

So, total ions dissociated 5.
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Concepts Used:

Coordination Compounds

A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.

Coordination entity:

A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.

Ligands:

A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.