You have moderately concentrated (5 - 6 % by mass) aqueous solutions containing water-soluble compou — Physical Chemistry — Kinetics Chemistry Question

Observe the color and the pH of the solutions.

Study the reactions of these cations with the anions used in systematic qualitative analysis: chloride, sulfide, carbonate, and hydroxide. Note that some sulfides can be precipitated even from acidic solutions, others are soluble in dilute strong acids, some are soluble in water, and some would react with water. Most cations will give a precipitate with CO₃ 2-. What happens if you use HCO₃– instead?
Whenever you observe no reaction at ambient temperature, try to predict whether boiling the solution would bring about a detectable change.

Learn which cations react with some common anions: nitrate, nitrite, phosphate, sulfate, perchlorate, bromide, and iodide. Throughout this problem, use solutions in the same concentration range (approximately 5-6 % by mass).

Which two cations in the list above cannot be distinguished from each other on the basis of their reactions with the anions mentioned so far?

Using the reactions you have learned, identify five unknown aqueous solutions. Every solution was made from a single compound which may contain any of the cations and anions you have encountered in this problem.