Acids, Bases and Salts

Define acid? What is alkali? What is a base? What all was prepared by Jabar Bin Haiyan? Who named such oxygen containing binary compounds, which gave acidic solution in water, as acids? Who discovered in 1815 that some acids are free from oxygen, e. g. HCl? Who suggested that the acidic character of acids is due to the presence of hydrogen atoms in it?