Qualitative Analysis of Analytical Group l : pre-laboratory assignment Name Inst
ID: 1080422 • Letter: Q
Question
Qualitative Analysis of Analytical Group l : pre-laboratory assignment Name Instructor Date Section 1. A solution contains Ag", Ba, K', and Cu" ions 2. Write the net ionic equation for the Propose a viable procedure to separate these four ions using the following solutions: Na COs HCI, and Na SOs. What is the order in which you would add the reagent solutions? Describe how the separations occur on each addition of the reagent solution. Hint: Start with the reactions. Steps in which the reaction takes place is specified at the beginning Step 2a precipitation of PbCl solubility rules in your textbook Step 2b. precipitation of Hg:Cl2 Step 2c. precipitation of AgCI Step 5. dissolution of PbCl2 Step 7. precipitation of PbCrO Step 8. reaction of Hg2Cl2 and NHs Step 9. reprecipitation of AgCExplanation / Answer
The HCl will make the Ag to precipitate by producing AgCl
Ag + HCl ==== AgCl (s) + H+
The Ba+2 will precipitate with Na2SO4
Na2SO4 + Ba+2 === BaSO4 (s) + 2Na
The Na2CO3 will make the Cu to precipitate
Cu + Na2CO3 ==== CuCO3 (s) + 2Na
The K+ ions will remain in the solution