Question

5. Answer questions based on the following two equilibria. Explain your answers. 2Cr042 (aq) + 2H(aq) — Cr2O72- + H20 Ba2+ (aq) + CrO2 (aq) → BaCrO4(s) (a) (3 pts What will happen if a solution of barium chloride and a solution of sodium chromate are mixed? Explain with Molecular equation. (b) (4 points) What would happen to the mixture from part (a) if a solution of hydrochloric acid were added to it?

Answer 1

um chloride and a salerble ed, a yellow precipitate & is as it a solution of barium chloride an of sodium chromate are mixed a yellow pr Of Bacroa (Barum chromate) formed Bach caq) & Nacro Caq) - Bacroa(s) + 2 Nad caq) 1 yellow ppt b) a mixture from part(a) is mixed hydrochloric acid, - Cro A (yellow color) turned to creo 2 Corange colair) Net ionic reaction from part(a) Built caq) + Groot caq) → BA GOALS) In part o) 2 C₂O2- Caq) + 2H+ (aq) = Cro2- +H2O yellow orange 1. Q. 3 Describe the reaction a) Ba2+ caq) + CO2? caq) - precipitation Reaction - Balrog (S) b) fe Clz + 3 SCN"Cag) = fe (SCN)2 + 36 299) complex - complex formation c) 267 042 + 2H+ = 6990.7 + tho . Acid-base reaction