

Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Material Type: Lab; Professor: Wolf; Class: Analytical Chemistry; Subject: Chemistry; University: Indiana State University; Term: Unknown 1989;
Typology: Lab Reports
1 / 3
This page cannot be seen from the preview
Don't miss anything!
Experiment 6
This week you will perform a titration of an unknown solid diprotic acid (mw~100-200 g/mol) with your standardized 0.1 M NaOH solution. The reaction sequence proceeds as follows: H 2 A + OH-^ HA-^ + H 2 O HA-^ + OH-^ A^2 -^ + H 2 O You will use a pH meter to measure solution pH and to accurately map out the titration curve of your unknown acid with a strong base. You will then determine the position of the equivalence points of the reaction graphically using the titration curve, first derivative titration curve, and a second derivative titration curve. You will determine pKa value(s) and calculate the molar mass of your unknown and use this information to identify your unknown based on comparison with literature values. You will work in groups of three and share data.
Experiment 6