Question

Hi. I have another question what element can separate hydrogen from oxygen`s water ?
i will very thankful if you help me.

Answer 1

I can't exactly think of a single element that can separate hydrogen from water, simply because oxygen is the most electronegative element. It would happen due to probability, but the amount of hydrogen taken would be in extremely low quantities. Now when you start bringing in molecules and proteins you're able to take away more.

Consider that in pure water you have a concentration of 10^-7 M or H3O+ and 10^-7 OH- at 25C, which is an extremely tiny amount and not really useful for much.

Answer 2

well if you add elemental sodium to water this produces hydrogen

2Na + 2H2O = 2 NaOH + H2

Answer 3

Any of the very active metals in Group 1 and 2 can do it. cwrw238 gives you one example with sodium; there are others.

Answer 4

@cwrw238 and @Carl_Pham are correct. :-) Alkali and Alkaline Earth metals.

Answer 5

- don't try rubidium or cesium though - can be explosive!!!!!

Answer 6

I would heed @cwrw238's safety advice! Pure potassium for example, needs to be stored submerged in oil for example. They get more reactive as you move down the rows (because that solitary valence electron is easier to remove, making it less stable)

Fires involving reactive metals are known as "Type D" and you should NOT spray water on them (unless you're talking about around 250 gpm (~950 L/m) per 10g or less of metal). The best way to put them out is to smoother them, bury them. The ideal stuff to use is a power extinguishing agent called Purple-K that you scoop or shovel onto it. If that's not available sand or dry dirt works great.

I have personally seen magnesium in the plating on sports car engines and rims turn into a blinding white fireball (a much higher temperature fire than your normal orange diffusion flame). A back hoe or bulldozer is probably your ideal fire fighting equipment when strictly dealing with a Type D fire (although the type D fire often lights other things on fire).

For many years of human history, magnesium was actually used as a fuse (in fact it still can be for thermite (see at the 0:11 to 0:20, that's what he putting in, a tiny strip of magnesium): http://www.youtube.com/watch?v=UPoJFL-l9jw

Answer 7

thank you for your help' but i have another question : can separate hydrogen from oxygen`s water by calcium ?
can calcium vaporization water?