Question

How will you distinguish between zinc carbonate and zinc nitrate?

Answer 1

Sr. No.	Zinc Carbonate (ZnCO3)	Zinc Nitrate [Zn(NO3)2]
1.	On adding dilute HCl, brisk effervescence occurs.	On adding dilute HCl, no effervescence occurs.
2.	The gas evolved is carbon dioxide (CO2), which turns lime water milky.	No gas is evolved.
3.	Thus, the presence of carbonate ion \[\ce{(CO^{2-}3)}\] is confirmed.	Thus, it can be distinguished from the carbonate ion.