if we change to hydrogen....?

Question

current cars emit CO2, if we changed to hydrogen cars would emit H2O right?
so then wouldnt there be more rain because of the enormous amount of evaporation from hydrogen exhaust. therefore leading to more rain, floods, erosion, etc.?

Answer 1

Interesting question. No doubt if all cars burned hydrogen then humidity of cities would go up. And water vapor is a more powerful greenhouse gas than carbon dioxide. So hydrogen only seems like a low impact fuel because hardly any cars are burning it right now. Just think how negligible the carbon dioxide problem would be if the number of cars producing it were as small as the number now burning hydrogen! It would be so small nobody would even notice it! So the problem is not a few people burning fossil fuel, then problem is EVERYBODY burning fossil fuel. If everybody burned hydrogen, there would be environmental consequences we just aren't thinking about now due to the volume of use.

Answer 2

Firstly, yes if we went to hydrogen burning engines there would be an increase in the amount of H2O emitted into the atmosphere, but a very minor amount in relation to the amount of water released into our atmosphere in primarily agricultural use, and secondarily industrial use. I personally am really looking forward to this technology coming to the for front, as long as we also incorporate proper changes to our electrical power infrastructure. We'll need alot more electricity to separate the H2 from the O in water to get the hydrogen to burn in our vehicles, and we won't be improving matters if we do so with a fossil fuel burning power plant. I recommend fission breeder reactors till better technology is developed.

Answer 3

thereis currently prototypes that run on hydrogen. they do not put out enough water to cause all that. it is the future, you will see them alot more frequently in the next decade

Answer 4

not necessarily