How to get acetylene

Galina Mirzahmedova
Galina Mirzahmedova
September 23, 2014
How to get acetylene

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How to get acetylene

Acetylene - gas belonging to the class of alkynes. Its chemical formula is C2H2, between the carbon atoms in the molecule there is a triple bond: HC≡CH.

How to get acetylene in industrial conditions

In industry, this substance is obtained by heating methane CH4at high temperatures (1500 ° C):

  • 2CH4→ C2H2+ 3H2

After that, the reaction products are cooled, because acetylene is an unstable compound that can decompose at temperatures above 10-12 ° C.

How to get acetylene at home

The simplest reaction, during which you can get acetylene from calcium carbide, is the process of its hydration. This reaction proceeds rapidly, since the carbide reacts very actively when interacting with water. In practice, to slow down the reaction, you can use sodium chloride (saturated sodium chloride solution), then the reaction will be calmer.

Methane production will require instruments such as a Würz flask, a tripod, a funnel, and a vapor tube.Also, reading our article - How to get methane, you will learn a few more ways to get this gas.

Consider another way to get acetylene. To do this, pour an aqueous solution of salt from the dropping funnel into a flask in which to place a small amount of calcium carbide. The substance will begin to sizzle and release bubbles - this is the release of acetylene, which can be caught by the vapor tube and collected in any container (chamber). The reaction equation looks like this:

  • CAC2+ 2H2О → С2H2+ Sa (OH)2

A byproduct of the reaction is calcium hydroxide, which precipitates.

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