Question

please i need help with these three questions.. thanks so much

Use the References to access important values if needed for this question. Write the precipitation reaction for barium chloride in aqueous solution: Use the pull-down menus to specify the state of each reactant and product A Is barium chloride considered soluble or not soluble ? A. Soluble B. Not soluble

Answer 1

Precipitation reaction: Ba?*ag) + SO? (aq) A BaSO4(s) Any source of sulfate ion It comes from BaCl2 BaCl2 (s) - Ba?*(aq)+ 2Cl(aq) Is soluble

2. When there are several ions in a solution that can precipitate with the same ion, the one that reaches the solubility product with the lowest value will precipitate first. A) Zn2+(aq) + 2PO2 (aq) + Zn3(PO4)2(5) Ksp = 9x10-33 Precipitate first It comes from (NH4)2 PO4 Zn2+(aq) + CO2? (ag) 2 ZnCO3 () Ksp = 1x10-10 It comes from Na Coz So: The formula of the first precipitating substance is: Zn3(PO4)2

3. When there are several ions in a solution that can precipitate with the same ion, the one that reaches the solubility product with the lowest value will precipitate first. A) Cu?*(aq) + Sia) P Cus) Ko = 4x10-36 | Precipitate first It comes from Cu(OAC), It comes from (NH4)2S Mn? (aq) + s (aq) + MnSs) Ksp = 1x10-5 It comes from Mn(NO3)2/ It comes from (NH2)2 S So: The formula of the first precipitating substance is: Cus

Ksp = 4x10-36 B) Precipitate first Cuss) A Cu²+(aq) + Slag) S s Ksp = [Cu?+][S] 4x10-36 = s? 14x108 =s S = 2x10-18 -------> [S] = 2x10-18