Acids

HCL à H+ + Cl-
According to Arrhenius acids are substances which ionize in aqueous solution, releasing kation H+. There are two types of acids: Oxyacids (they have in their composition the element oxygen) and Hydracids (they do not have in their composition the element oxygen). Acids are also important for pH reading, solutions with pH less than 7 are acidic. pH is related to the activity of the ion H+ in solution. 

Ex: H2CO3, H2¬SO4, HI, HF, HCN.




reference:LENZI, Ervim, Química Geral Experimental, 2.ed. Rio de Janeiro: F. Bastos ,2012. 

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