Chem 1b lab discussion exp 8

Chem 1b lab discussion exp 8 - Discussion In this...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Discussion In this experiment students calculated and measured pH levels of solutions with effects of buffers. The objectives of this experiment were to obtain quantitative values of acid ionization constants by measuring the pH. After, the objective was to prepare buffer solutions and observe their resistance to change in pH. These objective were accomplished; in order to measure pH levels, students used a pH meter and intermittently tested solutions being titrated. Next, buffer solutions were prepared by mixing acid base solutions. Then, using ICE tables and the Henderson-Hasselbalch equations, theoretical pH was calculated and compared to measured pH. The value of Ka for part 1 was measured at 2.0x10^-5. The value was obtained by titrating Acetic Acid and NaOH. The ½ equivalence point was determined by comparing the obtained results to the calculated curve, and finding the point in which pH jumped. With this information, the pH, pKa, and the Ka could be determined. There was a +2.4x10^-6 difference
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/09/2011 for the course CHEM 1B taught by Professor Watts during the Spring '08 term at UCSB.

Page1 / 2

Chem 1b lab discussion exp 8 - Discussion In this...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online