Is hydrogen gas deadly?

Answer 1

no, we breathe it all of the time. It's only if the hydrogen gas takes over the oxygen that we need to breathe is when it becomes hazardous. We can breathe it in and out, but we need oxygen alongside it, just like helium or nitrogen, to live.

Answer 2

Generally NO.

Depends on the amount that is in the environment that you are breathing. There is some in every breath you take, but if you get enough in one breath it would displace the oxygen you need and just as any other gas could kill you.

Too much CO2 could kill you, yet you breath it with out harm on a daily basis.

Hydrogen

Hydrogen (H2) has been used in deep diving gas mixes but is very explosive when mixed with more than about 4 to 5% oxygen (such as the oxygen found in breathing gas). This limits use of hydrogen to deep dives and imposes complicated protocols to insure that oxygen is cleared from the lungs, the blood stream and the breathing equipment before breathing hydrogen starts. Like helium, it increases the pitch of the diver's voice. See Exotic diving gases. Tech Diver Web. Retrieved on Jan 9, 2005.

Answer 3

Depends on what you mean by deadly. Normal breathing air does not contain hydrogen, at least nothing worth mentioning. Hydrogen is not dense enough to reside close to the earth's surface and resides in the uppermost atmosphere.
Hydrogen, along with oxygen and helium is used in deap-sea diving breathing gas used on 130m or deeper commercial diving.
As far as combustibility, hydrogen gas is highly flammable and will burn at concentrations as low as 4% H2 in air. look up "The Hindenburg" for more information.
There are 3 isotopes for hydrogen. The first two are relatively harmless, except for combustion in hydrogen's first isotope. Small amounts of tritium occur naturally because of the interaction of cosmic rays with atmospheric gases; tritium has also been released during nuclear weapons tests. Hydrogen's third isotope, known as tritium, is radioactive,It is radioactive, decaying into Helium-3 through beta decay with a half-life of 12.32 years. Small amounts of tritium occur naturally because of the interaction of cosmic rays with atmospheric gases; tritium has also been released during nuclear weapons tests.

Answer 4

There is no free hydrogen in the atmosphere, it is so light that it escapes the earth if it does not react. You don't breath it all the time as a pure substance. The only way you could breath it in is if you were to breath it in on purpose. The only hazardous effects would be:

a) if you breath in pure hydrogen with another substance - it is likely to react explosively, especially with a match.
b) if you breath it with no oxygen - you will simply suffocate.

Answer 5

it's explosive, and if it's the only thing being breathed in it can be quite harmful. but it's part of the oxygen, nitrogen, hydrogen mixture that we breathe all the time. so in that sense, no

Answer 6

Only if mixed with Oxygen and other chemicals or liquefied.

Answer 7

I don't know... If you ignite it then, definitely