🤓 Based on our data, we think this question is relevant for Professor Hurst's class at LSU.
We are asked to identify which ions remain after PbI2 precipitates in the given reaction:
2 KI(aq) + Pb(NO3)(aq) → 2 KNO3(aq) + PbI2(s)
We will refer to the solubility rules shown below:
•Soluble Ionic Compounds:
▪ Group 1A ions (Li+, Na+, K+, etc.) and Ammonium ion (NH4+) are soluble
▪ Nitrates (NO3-), Acetates (CH3COO- or C2H3O2-), and most Perchlorates (ClO4-) are soluble
▪ Cl-, Br-, and I- are soluble except when paired with Ag+, Pb2+, Cu+, Hg22+
▪ Sulfates (SO42-) are soluble except those of Ca2+, Sr2+, Ba2+, Ag+, and Pb2+
•Insoluble Ionic Compounds:
A precipitation reaction.
Which ions remain in solution after PbI2 precipitation is complete?