Yvan Tiako TiakoCHM 124-50Nov 26, 2018Prof: Hirul PatelLab 6: Determination of the Dissociation Constant of a Weak AcidList of Chemicals with Safety Hazard:-Unknown acid – hazards and makeup unknown-Sodium Hydroxide NaOH-Hazards - Like other corrosive acids and alkalis, drops of sodium hydroxide solutions canreadily decompose proteins and lipids in living tissues via amide hydrolysis and esterhydrolysis,-Phenolphthalein- C20H14O4-Phenolphthalein's common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methylred, bromothymol blue, and thymol blue. Phenolphthalein adopts four different states inaqueous solution: Under very strongly acidic conditions, it exists in protonated form,providing an orange coloration.Procedure:-Weigh out approximately 0.2 grams of the acid which will be tested. The exact mass isnot vital to the experiment because we are interested in the concentrations not the mass.
