Why is MgCO3 soluble in NH4Cl?
Dear Student,
The group reagents for Group V cations are (NH4)2CO3 in presence of NH4OH and NH4Cl.
Ammonium chloride suppresses the ionisation of ammonium arbonate and ammonium hydroxide, due to common ion effect., which leads to a decrease in the concentration of hydroxide and carbonate ions.
Thus, the ionic product does not exceed the solubility of magnesium carbonate.
Thus, it is not precipitated in a solution containing ammonium chloride.
Hope it helps.
Regards
The group reagents for Group V cations are (NH4)2CO3 in presence of NH4OH and NH4Cl.
Ammonium chloride suppresses the ionisation of ammonium arbonate and ammonium hydroxide, due to common ion effect., which leads to a decrease in the concentration of hydroxide and carbonate ions.
Thus, the ionic product does not exceed the solubility of magnesium carbonate.
Thus, it is not precipitated in a solution containing ammonium chloride.
Hope it helps.
Regards