Organic Acid
These are organic compounds, which can act as acids. Organic acids essentially contain hydrogen and carbon with another element/s. Most common organic acids are acetic acid, lactic acid, citric acid, formic acid, etc. These acids have a –COOH group. Sometimes organic compounds having –OH, -SH groups can act as acids too. For example, alcohols have acidic properties. Acetylene can also donate a proton showing acidic properties. The hydrogens attach to alpha carbon of the aldehydes, and ketones are also acidic protons. Often, organic acids are weak acids and partially dissociate in water.