LeChatelier's Principle Demo - Copper Complexes

*CORRECTION: At 1:16 the blue solution used is copper(II) CHLORIDE. I incorrectly stated that I used copper(II) sulfate.

Subject: High School Chemistry
Unit: Kinetics & Equilibrium
*This demonstration was developed using the page "Copper" from chemguide: http://www.chemguide.co.uk/inorganic/transition/copper.html

This video demonstrates LeChatelier's Principle, which states that a system at equilibrium will respond to a change in the system in order to restore equilibrium. This is a safer alternative to using cobalt (II) chloride dissolved in ethanol since copper salts are much less hazardous than cobalt salts, and there are no flammable vapors since water is the solvent.

WARNING: Always refer to the Safety Data Sheets (SDS) of chemicals before using. Free versions are available through Flinn Scientific: https://www.flinnsci.com/sds/

Materials:
goggles
gloves
1.0 M copper (II) chloride aqueous solution
household ammonia solution
6.0 M hydrochloric acid solution
test tubes
test tube rack
pipettes or droppers

Видео LeChatelier's Principle Demo - Copper Complexes канала Mr. Z Physical Science