An excess of water
was used in order to control the rise in temperature,
and so avoid the possibility of igniting the hydrogen. Uses 'gas
bag' - see note
A number of video
clips refers to 'oxygen', when decribing activities
involving a reaction with air (effectively 'dilute oxygen').
This video clip really does show the use of pure oxygen,
and thus the reaction will be more vigorous and the
flame will be much brighter. Uses 'gas
bag' - see note
Uses
'gas bag' - see note
Note that precipitated copper carbonate was used; this
contains copper hydroxide. The video was edited to avoid
showing the condensation that forms in the upper end
of the test-tube.
