Constants | Periodic Table A solution contains one or more of the following ions
ID: 704735 • Letter: C
Question
Constants | Periodic Table A solution contains one or more of the following ions: Ag+, Ca2+, and Cu2+. When sodium chloride is added to the solution, no precipitate forms. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered off and sodium carbonate is added to the remaining solution, producing a precipitate.
Write net ionic equations for the formation of each of the precipitates observed. Express your answers as chemical equations separated by a comma. Identify all of the phases in your answer.
Explanation / Answer
According to the problem;
When sodium sulfate is added to the solution, a white precipitate forms as follows:
Ca2+(aq)+SO42- (aq)--------->CaSO4 (s) White precipitate.
After the filteration and add some amount of sodium carbonate to the remaining solution, producing a precipitate.
Cu2+(aq)+CO32- (aq)------>CuCO3(s)
The Ksp of the CuCO3(s) is very low(3*10-12).therefore the CuCO3(s) is formed.