jaketodd said:I would greatly appreciate anyone who can tell me reliably how much energy is released from splitting a single H2 molecule's nucleus.
Thanks,
Jake
jaketodd said:I see what you mean... Let me revise the question: Please give me an example of a simple atom and provide the energy released when the nucleus is split.
Thanks for your patience,
Jake
edguy99 said:The bond strength for one proton and one neutron (Deuterium or Hydrogen2) is about 1.1MeV. Ie. 1.1MeV of energy will be released if the nucleus is split.
jaketodd said:Thank you! How do you calculate that for an arbitrary atom??
Jake
edguy99 said:http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/liqdrop.html#c2".
Sorry, but I also just noticed that my prior answer of 1.1MeV was per nucleon. I answered your question backwards. 2.2MeV of energy would be required to split them. 2.2MeV of energy would be released if they were forcibly joined together.
Drakkith said:From wikipedia:
When a uranium nucleus fissions into two daughter nuclei fragments, about one-tenth of 1 percent of the mass of the uranium nucleus[4] is converted to energy of ~200 MeV. For uranium-235 (total mean fission energy 202.5 MeV), typically ~169 MeV appears as the kinetic energy of the daughter nuclei, which fly apart at about 3% of the speed of light, due to Coulomb repulsion. Also, an average of 2.5 neutrons are emitted with a kinetic energy of ~2 MeV each (total of 4.8 MeV). The fission reaction also releases ~7 MeV in prompt gamma ray photons. The latter figure means that a nuclear fission explosion or criticality accident emits about 3.5% of its energy as gamma rays, less than 2.5% of its energy as fast neutrons (total ~ 6%), and the rest as kinetic energy of fission fragments ("heat"). In an atomic bomb, this heat may serve to raise the temperature of the bomb core to 100 million kelvin and cause secondary emission of soft X-rays, which convert some of this energy to ionizing radiation. However, in nuclear generators, the fission fragment kinetic energy remains as low-temperature heat which causes little or no ionization.
See here: http://en.wikipedia.org/wiki/Nuclear_fission
jaketodd said:Thanks, but I am now wondering how much energy is released from Deuterium/Hydrogen2 when its nucleus is split. Does anyone know this one?
Thanks!
Jake
jaketodd said:Thanks, but I am now wondering how much energy is released from Deuterium/Hydrogen2 when its nucleus is split. Does anyone know this one?
Thanks!
Jake
The process of splitting H2, also known as hydrogen splitting or hydrogen dissociation, involves breaking the chemical bonds between the two hydrogen atoms in a molecule of H2. This process is typically initiated by the input of energy, and the resulting energy released is due to the breaking of these bonds.
The amount of energy released when splitting H2 can vary depending on the specific conditions and methods used. However, on average, it takes about 436 kJ/mol of energy to break the bonds in H2, resulting in the release of the same amount of energy.
Yes, the energy released from splitting H2 can be harnessed for various practical uses. For example, it can be used to power fuel cells, which convert the energy from hydrogen into electricity. It can also be used in combustion engines to power vehicles and in industrial processes for heating and electricity generation.
Splitting H2 can be considered a sustainable source of energy if it is produced using renewable energy sources, such as solar or wind power. This is because the energy used to produce H2 is not derived from fossil fuels and does not contribute to greenhouse gas emissions.
While splitting H2 itself does not produce harmful emissions, the production of H2 through steam reforming or other methods can contribute to greenhouse gas emissions and air pollution. Additionally, the production and transportation of H2 can also have environmental impacts. Therefore, it is important to consider the source of the energy used to produce H2 and the methods used in its production to mitigate potential environmental concerns.