Uranium-235 Fission

235U + 1n → 141Ba + 92Kr + 31n

Visão geral

A uranium-235 nucleus absorbs a slow neutron and splits into barium-141 and krypton-92, releasing three neutrons and approximately 200 MeV of energy. This is one of many possible fission product combinations. The three released neutrons can trigger further fissions, creating a chain reaction. One kg of U-235 releases energy equivalent to 20,000 tonnes of TNT.

Participantes

Papel Substância Coeficiente Estado
Reagente Uranium U 1 (s)
Produto Barium Ba 1 (s)
Produto Krypton Kr 1 (g)

Exemplo do cotidiano

Nuclear power plants use controlled U-235 fission to generate about 10% of the world's electricity without direct CO₂ emissions.

Importância industrial

A fissão nuclear gera cerca de 2700 TWh de eletricidade anualmente a partir de 440 reatores em todo o mundo, fornecendo energia de base fiável.

Propriedades

Tipo
Nuclear
Reversível
Não
Energia
Exotérmico
ΔH
-19200000000,0 kJ/mol

Reações relacionadas

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Beta Decay of Strontium-90 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Uranium-235 Fission?
The balanced equation is: ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + 3¹n.
What type of reaction is Uranium-235 Fission?
Uranium-235 Fission is a nuclear reaction.
Is Uranium-235 Fission exothermic or endothermic?
Uranium-235 Fission is exothermic (releases energy). The enthalpy change (ΔH) is -19200000000.0 kJ/mol.