CHM110H5 Lecture Notes - Lecture 2: George Li, Lab Report, Malachite
Document Summary
Identification of an unknown acid by ph titration. Date the experiment was performed: october 19th 2015. Date the lab report was submitted: october 26th 2015. Purpose: the purpose of this lab was to identify an unknown sample of an acid by experimentally determining the ka of the reaction by using ph meter titration. The acid was to be identified as either acetic acid or a chloro derivative (mono, di, tri) of acetic acid. Experimental method: the lab was started by calibrating the ph meter by using three buffer solutions, ph 4, ph 7, and ph 10. The unknown acid was obtained and using a volumetric pipette the acid was transferred into the 100ml beaker and titrated with the naoh. A magnetic stirring bar was used to keep the solution thoroughly mixed and the ph electrodes were inserted into the beaker and made sure that it the magnetic stirring bar was not close to the electrodes.
