Proton-Proton Chain (Solar Fusion)

41H → 4He + 2e+ + 2νe + energy

Обзор

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.

Участники

Роль Вещество Коэффициент Состояние
Реагент Hydrogen H 4 (g)
Продукт Helium He 1 (g)

Пример из жизни

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.

Промышленное значение

Understanding stellar nucleosynthesis is fundamental to astrophysics and helps guide terrestrial fusion reactor design.

Свойства

Тип
Nuclear
Обратимая
Нет
Энергия
Экзотермическая
ΔH
-2520000000,0 kJ/mol

Связанные реакции

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.