Is this the right place for some Chemistry?

C

ColdFusion

Registered Senior Member
Some Chemistry ;)

Can anyone complete this equation:
H2O + ??? ---> CO2 + ???
With my very limited knowledge of chemistry i think the solution is this:
4H2O + 2C ---> 2CO2 + 4H2^

What do you think?

ColdFusion
 
Can anyone complete this equation:
H2O + ??? ---> CO2 + ???
With my very limited knowledge of chemistry i think the solution is this:
2H2O + C ---> CO2 + 2H2^

What do you think?

ColdFusion
 
The equation balances but you cannot stick a carbon rod in water and decompose it.
Ask for a chemistry thread here. I will back you.
 
Actually I have no clue about chemistry... I hated it in school but i think that was mostly because of my teacher, i've hated that bitch ;) hehe...

I was just thinking if it is possible to make air from water. And if it is possible to make a scuba of some sort, that works that way...

Just wondering...:confused: Thanks for the support anyway ;)

ColdFusion
 
ColdFusion,

My chemistry isn't that good either, but try putting carbonic acid in your formula (H2 CO3).

You don't get a chemical reaction, but the chemical formula does equate.

Tom
 
It'll be like this: (I assume...)

H2O + 2H2CO3 ---> 2CO2 + 3H2^

Hmm I don't know if these reactions are possible... It seems that we've to wait for someone that actually knows chemistry to get more further... ;)

ColdFusion
 
Carbonic acid in water: H2CO3 + 2H20 = CO3 + 2H3O

Carbonic acid forms when CO2 dissolves in water and will spontaneously break down into CO2 and H20.

H2O + CO2 = H2CO3

Equilibrium lies heavily on the side of the water and CO2.
 
Isn't it that way::
H2CO3 + 2 H2O --> CO2 + 3 H2O

So it is possible to make air out of water. And as i assume it's not that hard as i thought it could be.

ColdFusion
 
Originally posted by ColdFusion
I was just thinking if it is possible to make air from water. And if it is possible to make a scuba of some sort, that works that way...
Click to expand...
Submarines get oxygen by electrolyses of sea water.
2H20 -> 2H2 + O2
You can't get any more basic than that! But it takes a lot of electricity, so I doubt that it would work for SCUBA.
 
Sorry, H2CO3 + 2H20 = CO3 + 2H3O is for the acidic disassociation of carbonic acid in water. My bad.

Originally posted by ColdFusion
Isn't it that way::
H2CO3 + 2 H2O --> CO2 + 3 H2O

So it is possible to make air out of water. And as i assume it's not that hard as i thought it could be.
Click to expand...
Um...this is right, but it doesn't make air. Just CO2 and water.
 
But doesn't we breathe air (CO2) and not just oxygene?
What do you mean by just CO2 and water?

ColdFusion
 
The reaction produces carbon dioxide gas and water. Our air is mainly oxygen and nitrogen; there isn't too much CO2. The oxygen is all that really matters. You could breath pure oxygen if you wanted, or oxygen mixed with some other gas like argon. My point was that the reaction doesn't give you anything that you can breath.
 
Thanks :)
As i said I wasn't very good at chemistry. I'm sorry for my stupid questions:rolleyes:

Is there an other way of makeing oxygene out of water that doesn't need so much electricity?
H2O + ??? --> O2 +???

And how much electricity does the way you suggested takes?

ColdFusion
 
Originally posted by Nasor
You could breath pure oxygen if you wanted
Click to expand...
Except you'll experience central nervous system oxygen toxicity at any depth greater than 20 feet of sea water, or a PPO2 greater than 1.6 ATA.
or oxygen mixed with some other gas like argon.
Click to expand...
Except that argon has a very high lipid solubility and will lead to severe narcosis at depth.

- Warren
 
I'm not sure how much electricity it takes to break down water, but the short answer is 'a lot.' You could search for "disassociation energy of water" to find it if you're curious.

You might also be interested in a type of SCUBA technology called 'rebreathers' that recycle and reuse the oxygen in the tank to allow you to stay under water for a very, very long time. They're used by special forces because they allow you to swim long distances underwater and don't produce any bubbles like conventional SCUBA gear.
 
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