APLab.55 Separating a Mixture

APLab-55 Differential Solubility Salting Out

APLab.55 Separating a Mixture (Jan 30)

APLab.60 Chromatography

APLab-60 Chormatography

APLab.55 Separating a Mixture (Jan 30)

APLab.65 Colorimetry-Light Path

Excel Light Path

APLab-65 Colorimetry Concentration and Light Path

APLab.55 Separating a Mixture (Jan 30)

APLab.70 Colorimetry-Wavelength- Absorbance

Excel Absorbance

RGB Color Bands screen

Red-Blue Bands screen

APLab-70 Wavelength and Absorbance

APLab.55 Separating a Mixture (Jan 30)

APLab.75 Colorimetry-Concentration Absorbance

Excel Concentration and Absorbance

APLab.55 Separating a Mixture (Jan 30)

APLab.80 Virtual Spectrophotometer

Colorimetry, explained in the videos below, is an analysis technique that can accurately and quickly analyze concentrations that are so minuscule that the solute present in the sample would only weigh nanograms.

Old School Spectrophotometer

The above instructional vidoe uses an old-school spectrophotometer ($1,000) and will explain what you need to know for the most important lab procedure on the AP Chemistry exam.

The video below uses the newer UV-Vis spectrophotometer (around $10,000).

Mettler Vis-UV Spectrophotometer

Lab Techniques

• Filtration of a Precipitate