Introduction Pure compounds can easily be identified by their physical and chemical properties. The compound must be pure in order to remove any subtle errors from chemical observations in case impurities were present. The purpose of this experiment is to identify the organic acid through a series of experiments which tell us the acid’s properties. Experiments The melting point was acquired by using the melting point apparatus and capillary tubes. Before placing the unknown acid, the apparatus was set to 100 degrees Celsius. Increase by a 20 degree Celsius interval until melting begins. Preparing the NaOH solution – Measure 4.2 mL of the concentrated NaOH (19.1M). Place the acquired NaOH into a large beaker filled with 800 mL of deionized water then transfer to the 1000 mL bottle. The purpose of titration of NaOH with KHP is to determine the molarity of the NaOH solution. Standardization of NaOH: Weigh out about .3000 grams of KHP on a weigh boat, then transfer into an Erlenmeyer flask. Rinsing the weigh boat with DI water in order to successfully transfer all of the KHP. Dissolve the KHP by adding DI water into the flask until the 50 mL mark. After dissolving, add 2-3 drops of phenolphthalein indicator and titrate until the solution turns light pink. Repeat two more times. For HCl molarity determination, place 10 mL of HCl into an Erlenmeyer flask. Add 2-3 drops of phenolphthalein indicator then titrate until the solution turns light pink. Repeat two more times. For equivalent weight determination, acquire about .3000 grams of the unknown acid. Dissolve the unknown in with the appropriate ethanol: water ratio then add 2-3 drops of phenolphthalein indicator. Titrate the solution until it turns light pink. Repeat the experiment two more times. This titration determined the equivalent weight of the unknown acid. The pka experiment requires about .2000 grams of the organic acid to be dissolved using the appropriate ethanol to DI w