<P> The free acid , chlorous acid HClO , is the least stable oxoacid of chlorine and has only been observed as an aqueous solution at low concentrations . Since it can not be concentrated , it is not a commercial product . The alkali metal and alkaline earth metal compounds are all colorless or pale yellow , with sodium chlorite ( NaClO ) being the only commercially important chlorite . Heavy metal chlorites ( Ag , Hg , Tl , Pb , and also Cu and NH + 4 ) are unstable and decompose explosively with heat or shock . </P>
give the name and formula for the acid derived from the following anion chlorite
chlorous acid