Posted by TROUBLED on Monday, October 3, 2011 at 11:06pm.
The secret here is to know the solubility rules. Here is a simplified set for you to memorize.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
Here is an example.
#3.
Pb(NO3)3(aq) + Na2SO4(aq) ==> PbSO4(s) + 2NaNO3(aq)
The net ionic equation is
Pb^2+(aq) + SO4^2-(aq) ==> PbSO4(s). This reaction takes place BECAUSE PbSO4 is insoluble in water. All of the others have a ppt to form as a product, also.
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