Chemical Reactions: Precipitation and Solubility
What happens when the following compounds are mixed together: CaCl2, Na2S, Pb(NO3)2, (NH4)3PO4, Na2CO3, K2SO4, MgCl2, AgNO3?
The compounds that precipitate are CaCl2, Na2S, (NH4)3PO4, Na2CO3, and AgNO3. The compounds that remain soluble are Pb(NO3)2, K2SO4, and MgCl2.
Explanation:
- CaCl2 will form CaCO3
- Na2S will form PbS
- (NH4)3PO4 will form Pb3(PO4)2
- Na2CO3 will form CaCO3
- AgNO3 will form AgCl
- Pb(NO3)2 will dissociate into Pb2+ and 2NO3-
- K2SO4 will dissociate into 2K+ and SO42-
- MgCl2 will dissociate into Mg2+ and 2Cl-