... 2HCl = BaCl2 + H2O2 . Barium chloride (BaCl2·2H2O). Barium chloride is a white well-crystallized substance which is ... (BaSO4 ). Barium sulphate occurs in nature in the form of heavy white crystals. It is precipitated as a ...
... BaCl2 + H2SO4 BaSO4 ↓ + 2HCl (dil.) → With dilute hydrochloric acid, no effect is observe. (2) Chlorine gas turns starch iodide paper blue and sulphur dioxide gas turns moist acidified potassium dichromate paper green. (3) On adding ...