Proton-Proton Chain (Solar Fusion)

41H → 4He + 2e+ + 2νe + energy

概述

The proton-proton chain converts four hydrogen nuclei into one helium-4 nucleus, two positrons, and two electron neutrinos in a multi-step process. This reaction powers the sun and most main-sequence stars, releasing 26.7 MeV per helium nucleus. The sun converts 600 million tonnes of hydrogen to helium every second.

参与者

角色 物质 系数 状态
反应物 Hydrogen H 4 (g)
产物 Helium He 1 (g)

日常示例

All sunlight, and therefore virtually all life on Earth, is powered by this fusion reaction occurring in the sun's core at 15 million degrees.

工业重要性

理解恒星核合成是核聚变能源研究（托卡马克装置）的理论基础，对开发清洁核聚变能源具有重要指导意义。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-2520000000.0 kJ/mol

相关反应

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 Proton-Proton Chain (Solar Fusion)?
The balanced equation is: 4¹H → ⁴He + 2e⁺ + 2νₑ + energy.
What type of reaction is Proton-Proton Chain (Solar Fusion)?
Proton-Proton Chain (Solar Fusion) is a nuclear reaction.
Is Proton-Proton Chain (Solar Fusion) exothermic or endothermic?
Proton-Proton Chain (Solar Fusion) is exothermic (releases energy). The enthalpy change (ΔH) is -2520000000.0 kJ/mol.