What are the colors and states of common water-insoluble acids, alkalis and salts in junior middle school chemistry?
acid: silicic acid (H2SiO3) white solid base: copper hydroxide (Cu(OH)2 blue solid; Ferrous hydroxide (Fe(OH)2) white solid; Iron hydroxide (Fe(OH)3 red-brown solid; Slightly soluble white solid salt of calcium hydroxide (Ca(OH)2): CaCO3, MgCO3 (slightly soluble), BaSO4, Ag2SO4 (slightly soluble) and AgCl are all white solids. ...