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Ch.5 Classification & Balancing of Chemical Reactions

Chapter 5, Problem 20

An aqueous solution of a cation (represented as blue spheres in the diagram) is allowed to mix with a solution of an anion (represented as green spheres) and the following result is obtained:

Which combinations of cation and anion, chosen from the following lists, are compatible with the observed results? Explain. Cations: Na+, Ca2+, Ag+, Ni2+ Anions: Cl−, CO2−3, CrO2−4, NO−3

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