Identify the substance Identify the substance (iii) The pale green solid R turns reddish brown on healing. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids _ Share with your friends Share 0 Shrestha Pandey answered this FeSO4.7H2O On heating turn into brown from green It will form white ppt. BaSO4 And is insoluble in mineral acids 1 View Full Answer