1. Suppose you are given an unknown aqueous solution that contained one of the f
ID: 864565 • Letter: 1
Question
1. Suppose you are given an unknown aqueous solution that contained one of the following cations: Ag^+, Ba^+2, or Na^+ ions. You have available the following test solutions: 1 M sulfuric acid and 1 M hydrochloric acid. Explain how you would use these test solutions to determine the identity of the cation in the unknown solution. Using complete sentences and proper terms, explain the tests you would perform, the expected outcomes, and how the results would allow you to determine the presence or absence of each particular cation.Explanation / Answer
If the aqeous solution(contains Ag+) is treated with 1M H2SO4 then it produces AgSO4 precipitate which is insoluble in solution.
2Ag+ + H2SO4 --------> Ag2SO4 (insoluble in H2SO4 solution)
If the aqeous solution(contains Ba+) is treated with 1M H2SO4 then it produces BaSO4 white precipitate which is insoluble in solution.as well as in concentrated HCl also.
Ba2+ + H2SO4 --------> BaSO4 (insoluble in H2SO4 or HCl solution)
If the aqeous solution(contains Na+) is treated with 1M H2SO4/ 1M HCl then it produces NaCl/Na2SO4 salts which is/are soluble in solution since they are strong electrolyte
Na+ + H2SO4 --------> Na2SO4 (soluble in resulting solution)
Na+ + HCl ----------> NaCl (soluble in resulting solution)
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