Whats the chemical eqaution for carbon dioxide and water? CO2 + H2O = ?

Answer 1

The reaction of CO2 with H2O is going to give H2CO3... That is carbonic acid, a weak unstable acid.

H2CO3 is known only in solution, and as carbonate salts; it is present in carbonated drinks, and sparkling wine, but decomposes to form carbon dioxide and water...

Answer 2

With CO2 gas supplimentation the CO2 is quickly converted to Carbonic Acid by interaction with water which then reacts with other free water molecules to form Bicarbonate and Hydronium ions. These steps are what happens in our reaction chambers and is how CO2 is absorbed and held in aqueous solution.

1. CO2 + H20 --> H2CO3 (Carbonic Acid)
2. H2CO3 + H20 --> H3O+ and HCO3- (Hydronium and Bicarbonate)

3. HCO3- + OH- --> CO3(2-) (Carbonate)

Due to water's property of auto-ionization [where water molecules interact to form OH- (Hydroxide) and H+ (Hydride), OH- being basic and H+ being acidic] the Bicarbonate can react with the strongly basic Hydroxide to form Carbonate and H20. This is pretty unstable stuff, but is more easily accessible by plants than Bicarbonate since it's chemically similar to CO2 and doesn't have a lot of side groups to remove in order to be useful in photosynthesis.

Further evidence is the mechanism we use to test for CO2 levels in water, pH. The definition of an acid is a molecule that has at least one Proton (Hydrogen atom without the electron) available to be donated to or removed by another molecule/atom/ion. Since CO2 has no Hydrogens to provide the protons it can't be an acid. Therefore, CO2 is not available in our aquariums.

If there were nothing adding or removing one or more of the elements/atoms/ions involved in these steps the reactions would go on and on in equilibrium forever. In the cases of our tanks though, we have plants which do a smashing job of removing what carbon they can from the water, throwing a wrench into the lovely equilibrium we've established. That's why we add CO2 or another source of carbon to our tanks.

If you're going by Diana Walstad's tests then it stands to reason that the plants would do better in a tank with harder water because the elements are there to provide/produce higher amounts of carbonate/bicarbonate in the absence of CO2 supplimentation. Decomposition of organic matter produces CO2 but also the harder water is higher in Calcium Bicarbonate, which the plants can use as a source of carbon through biogenic decalcification. The plant absorbs the Calcium Carbonate (CaCO3) and breaks down the molecule to get at the Carbon. This is why we often see Ca deposits on plants that are getting their Carbon by this mechanism.

Also worth mentioning is the high solubility of CaCO3 (Calcite/Limestone) in water. Again, due to the auto-ionization of water the acidic Hydronium (H3O+) interacts with the CaCO3 to form calcium, water, and CO2.

1. CaCO3 + H3O(+) --> Ca + H2O + CO2
2. CO2 + H20 --> H2CO3 etc.

This is why plants can do so well in areas where limestone is available in close contact with surface water or where groundwater flows through limestone, ie: Florida.

Answer 3

a million. Al2(SO4)3 + BaCl2 ===> AlCl3 + BaSO4 because of the fact BaSO4 is a million:a million, try 3 in front of that: Al2(SO4)3 + 3BaCl2 ===> AlCl3 + 3BaSO4 That outcomes interior the balanced equation: Al2(SO4)3 + 3BaCl2 ===> 2AlCl3 + 3BaSO4 2. NaHCO3 ===> Na2CO3 + CO2 + H2O 2 Na's on the surprising, one on the left, so: 2NaHCO3 ===> Na2CO3 + CO2 + H2O

Answer 4

Pretty simple. CO2+H2O -> H2CO3.

Answer 5

hydrogen carbonate. a weak acid

Answer 6

= study and find out