The volume of hydrogen and oxygen after electrolysis:
2H20 (l) + Enegry --> 2H2 (g) + O2 (g)
If electrolysis occurs at standard temp and pressure (s.t.p. = 298.15 K ; 1 atm), then:
PV = nRT
For Hydrogen:
(1 atm) * (Xhydrogen) = 2 moles * (0.08206 L * Atm / K * mol) * (298.15 K)
Xhydrogen = 48.9 L of Hydrogen
since there is half as many moles of Oxygen, then there will be half as much gas or:
Xoxygen = 24.45 L of oxygen (the volume of one mole of gas at s.t.p.)
Remember, this is from 2 moles of water, so if you simplify my balanced chemical equation to one mole of water and a fraction of a mole of oxygen, then you need to decrease the volumes of gasses produced by 0.5. Enjoy!
It means that the concentration of the peroxide is such that for every 1mL of hydrogen peroxide solution, 100mL of oxygen will be produced if fully reduced, catalyzed, exposed to light, heated or decomposed in any manner to the fullest extent. The fullest extent means the end point where every molecule of hydrogen peroxide releases one oxygen atom, and is converted into water.
The strength of a solution may be described as a percentage or volume, where 1% hydrogen peroxide releases 3.3 volumes of oxygen during decomposition.Thus, a 3% solution is equivalent to 10 volume and a 6% solution to 20 volume, etc. Answer taken from Wikipedia 19/01/2009
This means that for every volume of hydrogen peroxide used, 20 volumes of oxygen will be produced. For example, if 1 ml of hydrogen peroxide is used/decomposes, 20 ml of oxygen will be formed.
Carbon, hydrogen, and oxygen
The formula H2O tells you that one molecule of water contains one Oxygen atom and two Hydrogen atoms.
The volume of hydrogen gas compares to the volume of oxygen gas based on their stoichiometric ratio in chemical reactions, particularly in the formation of water. In the reaction 2H₂ + O₂ → 2H₂O, two volumes of hydrogen gas react with one volume of oxygen gas. This means that for every two volumes of hydrogen, there is one volume of oxygen. Therefore, the volume of hydrogen gas is twice that of oxygen gas in this specific reaction.
Approximately twice as much volume of hydrogen as of oxygen: Both gases are diatomic and nearly ideal at normal temperature and pressure, and the atomic ratio of hydrogen to oxygen in water is 2.
The volume of hydrogen should be twice the volume of oxygen formed in the electrolysis of water because the ratio of the number of moles of hydrogen to oxygen in water is 2:1. This is based on the molecular formula of water, H2O, where each water molecule contains two hydrogen atoms and one oxygen atom.
Don't try it because if you have 1 volume of oxygen to 2 volumes of hydrogen, it is explosive!
In the Hoffman apparatus demonstration, the ratio of hydrogen and oxygen produced indicates the ratio of water's components (H2O). Since water molecule consists of two hydrogen atoms and one oxygen atom, the volume of hydrogen gas produced will be twice that of the oxygen gas when water is electrolyzed.
1 mole of water is equal to 18 g.2 g hydrogen is equal to 22,25 L.16 g oxygen is equal to 11,2 L.The volumes ratio H/O is approx. 2.
When an electric current is passed through water, water is split into it's two component gasses- hydrogen and oxygen. You will get about twice as much hydrogen as oxygen- since water (H2O) has twice the hydrogen as oxygen.
A gram of hydrogen has a greater volume than a gram of oxygen at the same temperature and pressure, as hydrogen has a lower molecular weight and therefore occupies more space per gram compared to oxygen.
The reaction between hydrogen gas and oxygen gas forms water, with 2 moles of hydrogen gas reacting with 1 mole of oxygen gas. This means that twice as much hydrogen gas is required compared to oxygen gas for the reaction to occur completely.
The decomposition of water (H₂O) into hydrogen and oxygen gas occurs in a 2:1 volume ratio. This means that for every two volumes of hydrogen gas produced, one volume of oxygen gas is generated. This ratio is consistent with the chemical reaction 2 H₂O → 2 H₂ + O₂. Therefore, in terms of gas volumes, hydrogen is produced twice as much as oxygen.
To determine the volume of oxygen remaining after the reaction, we first need to determine the stoichiometry of the reaction. The balanced chemical equation for the reaction of hydrogen and oxygen is 2H2 + O2 -> 2H2O, meaning 2 volumes of hydrogen react with 1 volume of oxygen to produce 2 volumes of water vapor. Since the reaction ratio is 2:1 for hydrogen to oxygen, the 8cm3 of hydrogen will react with 4cm3 of oxygen. Therefore, the initial 20cm3 of oxygen minus the 4cm3 used in the reaction leaves 16cm3 of oxygen remaining.
During electrolysis of water, the volume of gas produced at the anode (oxygen) is twice that of the volume of gas produced at the cathode (hydrogen). This is because water molecules (H2O) split into two hydrogen atoms for every one oxygen atom when an electric current is passed through the water during electrolysis.