Is hydrogen more dangerous then regular gas in cars?

Question

Is hydrogen more dangerous then regular gas in cars?

Answer 1

No.  Both are very volatile.

Answer 2

It is at least as dangerous as a propane car.  They can start fires

when parked in garages.

Answer 3

Hydrogen is explosive in any concentration of gas vapor.  Gasoline is only explosive when there is 13-15% concentration of gas vapor.

Answer 4

Regular gas being heavier than air will pool under the car and if set on fire in an accident, will burn up the car.  Hydrogen, being much lighter than air, will cause a big fireball if set on fire, but the fireball will be above the car and will only burn for a second as hydrogen will be used up quickly.

Work toward electric vehicles.  Much safer, as the new generation of lit-ion battery packs do not heat up and burn as the first generation sometimes did.

Answer 5

Yes. If it escapes in the garage it will bond with all the oxygen in the local atmosphere. Then how will you breathe?

Answer 6

Several companys have started putting hydrogen into metal hydride tanks and it is safer then gas in that form, I also remeber seeing an article about binding Hydrogen to carbon nanotubes but later they found out carbon nanotubes are as bad as asbestos to us.

Answer 7

In general the answer is yes. A tank of gaseous hydrogen is more prone to leaking than any gas tank and that can lead to an explosion like you see in Hollywood movies. Liquid hydrogen is a bigger problem since it must be kept at an extremely low temp and under pressure, a breach of the tank would freeze whatever it touches instantly since it's at −423.17 °F or −252.87°C. Then you have problems with production, making it from natural gas won't stop CO2 emissions at all and using electrolysis to make it is very inefficient at present. So not only is it more dangerous than gasoline, it's also much less practical. We can overcome both problems eventually but it's not a good solution today.