Fakir denies reality
Sorry but H² does not explode in the air.
I call it
a negation of reality,
mostly deaths from explosive combustion of the hydrogen air mixture, many accidents !!
If H2 is well mixed with air before (not the case of the torn Zeppelin just before with a hundred deaths)
explosive combustion breaks everything, as in Fukushima, and Japanese experts had believed this false claim that the explosion was impossible !!!
This negation of the reality of explosive dramatic accidents is criminal, like the negation HIV = AIDS (millions of deaths), like the negation that the ammonium nitrate fertilizer does not explode, thousands of dead, passed, with even some digging this fertilizer with a jackhammer, months, until the day tens of thousands of tons exploded !!!!Chatelot16, rare true chemist on econology, is right:
5% hydrogen in the air is enough for it to be explosive
The explosion is combustion (as with any explosive reaction) with a speed of propagation of the combustion wave very fast, sometimes faster than the speed of sound of 330m / s, if the initial concentration of H2 mixed with air is much higher than this 5% H2 threshold, flash point.
I am surprised at the negation of the reality of the danger of H2 which in my opinion explains accidents, especially since luckily accidents do not happen until the day when the disaster occurs.
H2 pretty much passes through everything, plastics, plastic seals, etc., H2 weakens a lot of metals, and great care must be taken when handling it.