Some common examples of such salts are sodium bicarbonate (NaHCO3), sodium bisulfate (NaHSO4) and sodium dihydrogenphosphate (NaH2PO4). Acids salts contain acidic or replaceable hydrogen in their composition. They react with further amounts of bases to give normal salts (NaHSO4 + NaOH = Na2SO4 + H2O).
@sathya why are B,C not acid salt?
@abcd b) Acidic salts are those which contain a replaceable H atom, so that H+ is released to make the solution acidic.
c) Na2HPO3 is formed when the two acidic hydrogens are replaced by sodium. In other words, this salt is the product of complete neutralisation of phosphoric acid by sodium hydroxide. It does not have any acidic hydrogen. So, it is a normal sodium salt of phosphorus acid.