Formaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.ormaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.
Actually most of the salts are insoluble in water. Not all the salts include chloride!!! And of those witch contain chloride, silver, led and mercury salts are insoluble!!! chemically speaking, not all salts are soluble in a particular solvent under normal conditions..
solution: according to table 4.1 most carbonates are insoluble. but carbonates of the alkali matal cations (such as sodium ion) are an exception to this rule and are soluble. 4.2 sample exercise; classify the following ionic compounds as soluble or insoluble in water: (a) sodium carbonate (Na2CO3).