Name: Nepholometry @bobworley7974
Uploaded: 2019-04-09T01:29:31-0400
Duration: 8 min 17 s
Description: This shows how you can time the formation of sulfur from the thiosulfate acid reaction. It uses the Lego colorimeter which uses LEDs as light source and collector (IR).

Various copper complexes starting with copper(II) chloride @bobworley7974

Uploaded January 2020 | Updated September 2026, 2 weeks ago

Usually copper sulfate is the basis for these experiments but there is a real advantage in starting with copper(II) chloride and ethanol is used to see the yellow tetrachlorocuprate ion.

Various copper complexes starting with copper(II) chloride

Nitrogen monoxide preparation and reactions

The Effect of Temperature on the N2O4 and NO2 equilibrium