Word equation first: barium chloride + sodium sulfate -> barium sulfate + sodium chlorideįormulae: BaCl2 + Na2SO4 -> BaSO4 + NaClīalancing: BaCl2 + Na2SO4 -> BaSO4 + 2 NaCl Write the balanced equation for this reaction. When barium chloride solution, BaCl2, is added to sodium sulfate solution, Na2SO4, a white precipitate of barium sulfate, BaSO4, is formed. Why do we ask patients to eat Barium Sulfate when they need an X-Ray of the intestines and yet Barium ions are toxic?īecause Barium Sulfate is insoluble so there are no Barium ions able to go into the blood.Ī precipitate is formed when two solutions are mixed and an insoluble compound forms the precipitate is the insoluble compound What is the name of the precipitate formed when Barium Nitrate is added to Sodium Sulfate? What solution could you add to Lead Nitrate to make Lead Iodide? What kind of ions does a flame test help identify?ĭescribe the steps needed to prepare a pure, dry sample of lead iodide from solutions of lead nitrate and potassium iodide.įiltering off the precipitate, including apparatusĭrying the precipitate (oven/between filter papers)ĭescribe the tests you could carry out on a sample of water to show that it contained dissolved Potassium Carbonateįor chloride ions: add dilute nitric acid (1) add silver nitrate (solution) (1) white precipitate/solid forms (1) What is the colour of the flame when you burn K+ ions?įizz on addition of HCl the gas produced will turn limewater cloudyĪdd Hydrochloric acid then barium chloride solution a white precipitates forms

What is the colour of the flame when you burn Na+ ions? When the compound is placed in a flame, the flame turns greenĪdd Nitric acid then silver nitrate AND acid solution a white precipitate forms When the compound is placed in a flame, the flame turns red C2 ions testing C2 precipitates and ions testing Question

Precipitate tests