Description of experiment
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Needed compounds:
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ammonia : NH3
trichloroisocyanuric acid : C3N3O3Cl3
Class:
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elem=Cl,N
redox
Summary:
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TCCA reacts with ammonia. With 5% ammonia the reaction already is very
vigorous, producing copious amounts of white smoke. With 15% ammonia the
reaction is VERY violent, almost explosive.
Description:
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Take a piece of TCCA, not larger than a pea and throw this in a few ml of
5% ammonia, which is in a beaker: The TCCA reacts violently, producing lots
of gas and white smoke. Part of the gas is pale green, this must be chlorine.
It is remarkable that chlorine is formed under such alkaline conditions.
This at the same time explains the formation of the large amount of white
smoke. The chlorine reacts with ammonia, one of the products being ammonium
chloride.
Take a piece of TCCA, not larger than a pea and throw this in a few ml of 15%
ammonia. Do this outside! : The TCCA reacts with a loud crackling noise and
it is scattered to small pieces, some of which are jumping out of the beaker.
Remark: With 25% ammonia the reaction is extremely dangerous. A real explosion
occurs when 25% ammonia is poured over a chunk of TCCA with a diameter of 1
cm or so. Be careful!