Approximately 40 mL of the 0.1M NaOH was added to the 250 mL beaker. The 40-mL of NaOH was then added to the buret which was then attached to the ring stand.
The LabQuest and the Vernier pH sensor was then hooked up and turned on to measure and graph the pH of the solution and the volume of NaOH. The Vernier pH sensor was then was placed in the solution and remained in the solution throughout the duration of the experiment.
Then, the rate of the drip from the buret was then turned on to have a drip rate of …show more content…
The solution of NaOH, water and HCl in the 100-mL was poured into the proper waste container. The solution of 40-mL of water and 5-mL of HCl was prepared again in the same 100-mL beaker and placed under the …show more content…
The buret was turned back on with a rate of approximately one drop per second in which the solution was stirred with the magnetic stirrer as the NaOH was titrated into the solution.
As the LabQuest was plotting the graph and the volume of NaOH was increasing as it was added to the HCl solution, it was discovered that the LabQuest malfunctioned and stopped at the pH of two. The pipette was then turned off again and the TA was then notified in which it was then fixed.
The solution containing the HCl, NaOH and water in the 100-mL was then disposed into the proper waste container. In the same 100-mL beaker, 40-mL of water was added then 5-mL of HCl was also added. The Vernier pH sensor was again placed and held in the solution and the LabQuest was properly programmed and turned on.
The buret was then turned on again, with a rate of approximately one drop per second and the solution was stirred as NaOH was added.
The proper graph was created while the NaOH was titrated into the HCl and water solution, in which the equivalence point was displayed on the graph and