Search for Answers to Your Chemistry Questions

Write the net ionic equation for the precipitation reaction or reaction that occur?

Three solutions are mixed together to form a single solution. One contains 0.2 mol of Pb(CH3COO)2, the second contains 0.1 mol of Na2S , and the third contains 0.1 of CaCl2.

Write the net ionic equations for the precipitation reaction or reactions that occur.

Thanks guys!

Look up solubility rules such as http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html. This should tell you that lead sulphide and lead chloride are not very soluble and will precipitate. Something like

2Pb(CH3COO)2(aq) + Na2S + CaCl2 ---> PbS(s) + PbCl2(s) + 2NaCH3COO(aq)

puttting charges in

2Pb2+(CH3COO-)2(aq) + (Na+)2S2- + Ca2+(Cl-)2 ---> PbS(s) + PbCl2(s) + 2Na+CH3COO-(aq)

Separating ions in soluble compounds

2Pb2+(aq) + 2CH3COO-(aq)+ 2Na+(aq) + S2-(aq) + Ca2+(aq) + 2Cl-(aq) ---> PbS(s) + PbCl2(s) + 2Na+(aq) + 2CH3COO-(aq)

Eliminating spectator ions

2Pb2+(aq) + S2-(aq) + 2Cl-(aq) ---> PbS(s) + PbCl2(s)