Uranium-235 Fission

235U + 1n → 141Ba + 92Kr + 31n

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Uranium U 1 (s)
Sản phẩm Barium Ba 1 (s)
Sản phẩm Krypton Kr 1 (g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Nuclear fission generates about 2,700 TWh of electricity annually from 440 reactors worldwide, providing reliable baseload power.

Tính chất

Loại
Nuclear
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-19200000000,0 kJ/mol

Phản ứng liên quan

Alpha Decay of Radon-222 Neutron Capture by Uranium-238 Beta Decay of Strontium-90 Beta Decay of Cobalt-60 Beta Decay of Carbon-14 Proton-Proton Chain (Solar Fusion) Positron Emission of Carbon-11 Positron Emission of Fluorine-18 (PET Scan) Technetium-99m Gamma Decay Alpha Decay of Radium-226

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.