🤓 Based on our data, we think this question is relevant for Professor Fletcher's class at UI.
We are asked to identify which reactants will produce a precipitate.
We will refer to the solubility rules in order to determine if the product form would be an insoluble salt (precipitate) or not.
•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:
Which of the following pairs of aqueous solutions will form a precipitate when mixed?
a. HCl + LiOH
b. MgCl2 + KOH
c. Li2S + HCl
d. K2CO3 + HNO3
e. All of these solution pairs will produce a precipitate