Lab Report On Titration

1393 Words6 Pages
For this experiment, a titration was performed to determine the unknown concentration of a given HCl sample by reacting it with a solution of sodium hydroxide. NaOH first had to be standardized due to it being hygroscopic. A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.1 The titration of KHP with NaOH was the standardization process which determined the actual concentration of NaOH. This value helped determine the volume of NaOH seen within the second derivative curve to find the moles of NaOH. The moles of NaOH were then used to find the moles of HCl by looking at a balanced chemical equation. The moles were divided by the volume of unknown 1 HCl to get the actual concentration of HCl. The pH of the solution as it was being titrated was monitored by a pH probe and the LabQuest software. Phenolphthalein, a pH indicator, was also used to determine when the solutions reached their endpoints.

A titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change.2 Titrations were performed during this experiment by using a burette, burette clamp, utility clamp, pH probe, ring stand, and Lab Quest. The amount of titrant added to the analyte could be seen on the burette by looking at the values. When the stopcock of the burette was

More about Lab Report On Titration

Get Access