pH Meter, Amino Acid Titration and Buffers Lab

concentration of protons

Washing and blotting the probes during titration can cause excess water to be introduced to the substances during the experiment which changes the ________ in the solution affecting the pH.

Aspartate

________ will deprotonate once again and lose a proton of the amino group to generate NH2 in a highly basic solution with a pH range of 9.68 to 9.9, indicating pKa3.

Uneven distribution

________ can occur if the mixture is not well blended; this might result in erroneous pH measurements in different sections of the container, and hence wrong overall findings.

Parallax error

________ is an error caused by not reading the burette at eye level can lead to a(n) ________ where the incorrect volume can be read, in turn affecting the HCl concentration.

number of moles

The ________ in a material is calculated as the product of its concentration and volume.