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Curated Video
Amylase and pH Experiment - Observing Results
The video is the second out of three lecture presentations on an experiment involving amylase and pH. The presenter introduces Catherine, who performs the experiment and collects results. Equipment for the experiment is shown and...
Curated Video
Amylase and pH Experiment: Observing and Collecting Results
The video is the second of three lecture presentations on the amylase and pH experiment. It shows Catherine carrying out the experiment and collecting results. The presenter begins by discussing the equipment that Catherine is using,...
Bozeman Science
Bozeman Science: P H and Buffers
In the following video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer...
Khan Academy
Khan Academy: Buffers and Henderson Hasselbalch
A buffer solution contains a mixture of a weak acid and its conjugate base (or a weak base and its conjugate acid). The equilibrium between the weak acid and its conjugate base allows the solution to resist changes to pH when small...
Khan Academy
Khan Academy: Buffer Capacity
This video explains buffer capacity and uses an example showing why it depends on the absolute concentrations of the conjugate acid and base. [10:43]