This document is a completed lab report – Lab Report #15 – for CHEM 10600 (General Chem Lab) at Hunter College CUNY. It details an experiment focused on titration curves, specifically investigating a mysterious acid (benzoic acid) and polyprotic acids (citric acid). This report is submitted by Alyssa Sato as part of her course requirements.
This lab report is essential for students who have completed the corresponding experiment. It serves as a record of experimental procedures, observations, data analysis, and conclusions drawn from the lab work. It’s used for grading and demonstrates the student’s understanding of acid-base titrations and their application to identifying unknown acids and characterizing polyprotic acid behavior.
This report *does not* include instructions on how to perform the titration, nor does it provide a comprehensive explanation of the underlying chemical principles. It assumes the reader has already participated in the lab and is familiar with the concepts.
The full report provides: detailed experimental data tables for the benzoic acid titration, a graph of pH versus volume of NaOH, calculations of the acid concentration and Ka value, data and analysis for the citric acid titration including Ka values for each proton, and answers to post-lab questions regarding species identification and alternative analytical methods. This preview only describes the report’s contents and purpose.
