Action:
TWO 200 ml. beakers are standing on the table. you pick BLACK CARBON them up, pour a clear liquid from one beaker into the other, which is one-tllirtf full of a white powder. Stir well with a stirring rod for a Fcw seconds aid then place the beaker on the table. Placing a white cal.dl)oat.d 1)ehind the beaker, the material begins to darkcn and gives off fumes. In a few minutes a Black solid will rise several itlches above the beaker
You Need:
About 10ml. of conc sulfuric acid in the first beaker;
powdered sugar in the second;
stirring rod.
Why:-
Black carbon remains wtren the sulfuric acid removcs the elements hydrogen and oxygen from sugar.cause the niaterial. to rise or Joarn.
Suggestion
For an instantaneous reaction, try the following experiment. From two 200 ml. beakers, pour two liquids simultaneously into an enipty 4800 ml. beaker. One contains 50 ml.concentrated sulfuric acid; the other is a concentrated sugar solution made by d i s s o l v i i~1~3 0 g r a n~so f sugar in 1~0 0m l.of water. Immediate reaction with considerable frothing occurs when the liquids come in contact. A large plate 01 paper should be under the beaker to catch the overflow the first metod produces sulfur dioxide fumes that are somewhat suffocating in a small ro0.m. The formalion of Black powder gives the Demonstration a special appeal.
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