hydrogen combustion to form hydrogen peroxide
Quicktime movie of the demonstration:
Photographs of the
demonstration (with explanations)
Without using a flash, one can see the yellow flame of hydrogen
burning. The yellow results from the glass pipet which contains
Here the stream of hydrogen is playing across an ice cube.
In this experiment, 4.65 mL drippings (from H2
ice cube) were collected and then (left) 0.25 mL, (middle) 0.50 mL and
(right) 1.07 mL of 0.00082 M KMnO4
(aq) were added to the
drippings (left picture) and to a similar amount of distilled water
(right picture). The yellow color is due to manganese(IV)
oxide/hydroxide which did not precipitate due to the dilute
concentration, 0.00016 M.