PSYC 2021 Lecture Notes - Lecture 5: Phenolphthalein, Calcium Hydroxide, Room Temperature
Document Summary
The purpose of this experiment was to identify the solubility properties of ca(oh)2 also known as calcium hydroxide. Calcium hydroxide is produced by reacting calcium oxide lime with water in a process known as slacking. Calcium hydroxide is known to be a strong base and is therefore used as an inexpensive alkali. It known to be used in food preserving, but also known to be toxic at certain concentrations. In order to determine the concentration of calcium hydroxide in this experiment, the volume of saturated calcium hydroxide was required to neutralize a solution of a known concentration of hcl; also known as hydrochloric acid. This was conduced using an indicator known as phenolphthalein: experimental method. For a detailed procedural overview please consult the 2015-2016 chm110 course manual, determination of the ksp and standard thermodynamic parameters for dissolving. Ca(oh)2 pages 87-89 : results and calculations (the data sheet is attached at the end of the lab)
