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Chlorine and hydrogen gas cannon

What you can see here is a boiling tube (strengthened with sticky tape to prevent shattering) filled and corked with the explosive 50/50 mixture of chlorine and hydrogen gas. When a UV light is placed behind the boiling tube, the amount of energy generated by it is enough to ignite the mixture, suddenly increasing the pressure within the boiling tube and causing the bung to explode out with huge force. 

THE SCIENCE- Free Radical Reactions

Chlorine absorbs UV light, the energy of which is equivalent to ca  400 kJ mol-1. This is more than the Cl-Cl bond strength (242 kJ mol-1) in the chlorine molecule, which consequently splits into two chlorine free radicals with one unpaired electron each:  

Cl2  right arrow 2Clradical dot     

After this initiation step, each chlorine radical can react, on collision, with a hydrogen molecule by abstracting a hydrogen atom to form hydrogen chloride and a hydrogen radical: 

Clradical dot + H2 right arrow HCl + Hradical dot 

The hydrogen radical can then react with a chlorine molecule to produce another chlorine radical: 

Hradical dot + Cl2  right arrow HCl + Clradical dot 

These two propagation steps set up a chain reaction, which terminates if two radicals combine: 

Hradical dot + Clradical dot    right arrow  HCl 

The probability of each of the four steps in the chain reaction is based on the relative concentrations of the species involved. The likelihood of the termination step is improbable, owing to the much higher concentrations of H2and Cl2. Therefore, the chain reaction should propagate through a vast number of H2 and Cl molecules before it terminates (RSC- who could explain it far better than I ever could!).

video source for more tips and tricks of this demonstration.

Oh and this should be pretty obvious but DO NOT TRY THIS AT HOME. Chlorine is a toxic gas and the reaction can be very dangerous if not properly controlled.

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Door to Hell

"Door to Hell is a natural gas field in Derweze (also spelled Darvaza, meaning "gate"), Ahal Province, Turkmenistan. The Door to Hell is noted for its natural gas fire which has been burning continuously since it was lit by Soviet petrochemical scientists in 1971, fed by the rich natural gas deposits in the area. The pungent smell of burning sulfur pervades the area for some distance.”

Well, that’s crazy.

Source: Here & Here

aww my childhood home <3 I miss hell

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