demo videos

[Zellmer, Robert]

Indicators: uses a "universal" indicator composed of 4 indicators.  It's blue/purple
when basic, green when neutral and yellow/red when acidic.  Dry ice (CO2) is
dropped into the graduated cylinder.  It reacts with the water (Lewis acid-base
rxn.) to form carbonic acid (H2CO3), which then ionizes to turn the soln acidic.

https://www.youtube.com/watch?v=wTZZfMP0SUg&t=2s

Acidity and basicity of salts:  See if you can predict what happens when various
salts are added to water (uses the universal indicator from above).  Do the salts
produce acidic, neutral or basic solutions.

https://www.youtube.com/watch?v=ZK7z9tN9_fg

Buffer Capacity:

https://www.youtube.com/watch?v=r4DRzn9cb08

Hope these help if you're struggling understanding some of these concepts.

Dr. Zellmer
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osu.edu/pipermail/cbc-chem1220/attachments/20210704/50b730ed/attachment.html>