Selenious Acid, H2Se)3, is primarily used to chemically darken copper, brass, and bronze. It is a diprotic acid with the following Ka values: Ka1 =2.7x10-3 and Ka2= 5.0x10-8.what is the pH of a 2.89 M solution of selenious acid?Estimate [HSe)3-] and [SeO3 2-]