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How much combustion energy is released from two Hydrogen Atoms and one Oxygen Atom?
Wiki User
∙ 16y ago
478 KiloJoules per mole
Wiki User
∙ 16y ago
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How do we turn hydrogen into energy we can use?
Hydrogen can be burnt with oxygen and the formation of the chemical bonds between the atoms releases energy as heat. Free hydrogen is normally manufactured by electrolysis from water, and this requires energy to separate the hydrogen-oxygen bonds, and it is this energy that is released when the chemical bonds are re-formed by combustion.
How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct combustion of hydrogen and oxygen?
In a fuel cell, the reaction of hydrogen and oxygen occurs electrochemically, producing electricity as a byproduct. This process is more efficient and produces less waste compared to direct combustion of hydrogen and oxygen, which releases energy in the form of heat without generating electricity. Fuel cells offer a cleaner and more controlled way to harness energy from hydrogen compared to combustion.
Is energy in water from hydrogen molecules?
Yes, energy in water comes from the hydrogen and oxygen molecules that make up water. When these molecules undergo a chemical reaction, such as during combustion or electrolysis, energy can be released or absorbed.
Why doesn't water formed by hydrogen and oxygen combust?
When hydrogen and oxygen react to form water, the chemical reaction is exothermic, meaning it releases energy in the form of heat. This process stabilizes the water molecules and prevents them from further reacting with oxygen in a combustion reaction. In other words, the energy released during the formation of water is higher than what would be required for further combustion.
Best Hydrogen gas to Oxygen gas ratio for combustion to occur?
The best ratio for hydrogen gas to oxygen gas for combustion is 2:1, where two molecules of hydrogen combine with one molecule of oxygen to form water. This ratio ensures complete combustion and optimal energy release. Any excess hydrogen or oxygen could lead to inefficient combustion or potential safety hazards.
How do we turn hydrogen into energy we can use?
Hydrogen can be burnt with oxygen and the formation of the chemical bonds between the atoms releases energy as heat. Free hydrogen is normally manufactured by electrolysis from water, and this requires energy to separate the hydrogen-oxygen bonds, and it is this energy that is released when the chemical bonds are re-formed by combustion.
How do motors on hydrogen cars differ from combustion or hybrid engines?
Like a gas combustion engine, a hydrogen engine relies on the combustion process - in this case, combustion that results when hydrogen is combined with oxygen. Fuel cells in a hydrogen-powered car then convert this mechanical energy into electrical energy.
How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct combustion of hydrogen and oxygen?
In a fuel cell, the reaction of hydrogen and oxygen occurs electrochemically, producing electricity as a byproduct. This process is more efficient and produces less waste compared to direct combustion of hydrogen and oxygen, which releases energy in the form of heat without generating electricity. Fuel cells offer a cleaner and more controlled way to harness energy from hydrogen compared to combustion.
Is energy in water from hydrogen molecules?
Yes, energy in water comes from the hydrogen and oxygen molecules that make up water. When these molecules undergo a chemical reaction, such as during combustion or electrolysis, energy can be released or absorbed.
Why doesn't water formed by hydrogen and oxygen combust?
When hydrogen and oxygen react to form water, the chemical reaction is exothermic, meaning it releases energy in the form of heat. This process stabilizes the water molecules and prevents them from further reacting with oxygen in a combustion reaction. In other words, the energy released during the formation of water is higher than what would be required for further combustion.
Will the energy produced on combustion of hydrogen be more than the energy used for separation of hydrogen from water through electrolysis?
In theory, the energy produced by creating four oxygen-hydrogen bonds after breaking two Oxygen-oxygen and hydrogen-hydrogen bonds in the reaction O2 + 2H2 -> 2H2O (hydrogen combustion in oxygen) is exactly the same than the energy needed to break four oxygen-hydrogen bonds to create two oxygen-oxygen and hydrogen-hydrogen bonds in the reaction 2H2O -> O2 + 2H2 (water electrolysis) However, you will always have great energy loss during electrolysis (an important part of your energy will be used to warm up your water) and in getting back your energy from your oxygen and hydrogen gas (a combustible battery or a motor will warm up too).
What are two indicators that a combustion reaction has occurred?
energy is released and oxygen is consumed
Best Hydrogen gas to Oxygen gas ratio for combustion to occur?
The best ratio for hydrogen gas to oxygen gas for combustion is 2:1, where two molecules of hydrogen combine with one molecule of oxygen to form water. This ratio ensures complete combustion and optimal energy release. Any excess hydrogen or oxygen could lead to inefficient combustion or potential safety hazards.
Is hydrogen a combustion reaction?
Hydrogen can undergo a combustion reaction when it reacts with oxygen to form water, releasing energy in the process. This reaction is exothermic and produces heat and water as products.
What releases water and energy?
Combustion of hydrogen gives a lot of heat and water. The stoichiometric reaction of hydrogen with oxygen is: 2H2(g) + O2(g) gives 2H2O(l) + 572 kJ Hydrogen's Enthalpy of Combustion is 286 kJ/mole
What process can make pure water?
If pure water is required the combustion of hydrogen and oxygen in a previously evacuated inert container would provide the purest result
Why is water produced when hydrogen is burned?
Water is produced when hydrogen is burned because hydrogen gas (H2) reacts with oxygen gas (O2) in the air to form water vapor (H2O) through a combustion reaction. The reaction between hydrogen and oxygen releases energy, which is why burning hydrogen is used as a source of power in fuel cells and rockets.
