No. You need to know the solubility rules. Here is a simplified set. It can't be d because there is no CO3 in the system.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
A mixture of lead, magnesium, nitrate and chromate ions are present in a solution. What will the precipitate be?
a) MgPb
b) Pb(NO3)2
c) PbCrO4
d) MgCO3
I think its d)- am i right?
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