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questions :pharaon snake is what
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[Member (黑面书生)]answers [Chinese ]Time :2016-02-14
Pharaoh snake is a chemical reaction in the expansion of the most famous. The principle is mercury thiocyanate heat easily decomposed due to rapid expansion of volume, the growth turns into a snake. This reaction produces cyanide, a highly toxic, the experiment may produce a small amount of carbon monoxide, it should be outdoors or in well-ventilated place, to avoid poisoning.

Pharaoh snake is a chemical reaction in the expansion of the most famous. Thiocyanate mercury thermal decomposition equation: 4Hg (SCN) ₂ = 4HgS 2CS₂ 3 (CN) ₂ ↑ N₂ ↑, the reaction process is very shocking.

Similar reactions have its thermal decomposition of ammonium dichromate. But it is different thiocyanate Mercury is a white powder, ammonium dichromate is orange-yellow monoclinic crystal. Decomposition of ammonium dichromate similar volcanic eruptions, (NH4) 2Cr2O7 == (heating) Cr2O3 N2 ↑ 2H2O.

The principle is mercury thiocyanate heat easily decomposed due to rapid expansion of volume, the growth turns into a snake. This reaction produces cyanide, a highly toxic will experiment should be carried out in order to avoid poisoning outdoors or ventilated place.

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