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Solution: Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed?ammonium phosphate and calcium chloride

Problem

Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed?

ammonium phosphate and calcium chloride

Solution

We are asked which ions in solution will remain unreacted after ammonium phosphate and calcium chloride are mixed. 


We’ll use the solubility rules to answer this problem.


Solubility Rules:

Soluble Ionic Compounds:

 ▪ Group 1A ions (Li+, Na+, K+, etc.) and Ammoniumion (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+

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