Photodissociation of Chlorine Gas
Cl2 → 2Cl·
Обзор
UV or visible light (< 500 nm) cleaves the Cl–Cl bond homolytically to produce two chlorine free radicals. This is the initiation step in many radical chain reactions, including the chlorination of hydrocarbons. Each chlorine radical can propagate thousands of reaction cycles before termination.
Пример из жизни
The chlorination of methane to produce chloromethane begins with this UV-initiated splitting of chlorine gas.
Промышленное значение
Free radical chlorination is used to manufacture chlorinated solvents, PVC (polyvinyl chloride), and various chlorinated organic compounds.
Свойства
- Тип
- Photochemical
- Обратимая
- Нет
- Энергия
- Эндотермическая
- ΔH
- 242,6 kJ/mol
Связанные реакции
Cis-Trans Isomerization of Retinal
Silver Chloride Photodecomposition
Luminol Chemiluminescence
Firefly Bioluminescence (Luciferin Oxidation)
Photolysis of Water (Vacuum UV)
Photochemical Smog Formation (NO₂ Photolysis)
Photodegradation of Methylene Blue by TiO₂
Silver Bromide Photodecomposition
Photosynthesis
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for Photodissociation of Chlorine Gas?
The balanced equation is: Cl₂ → 2Cl·.
What type of reaction is Photodissociation of Chlorine Gas?
Photodissociation of Chlorine Gas is a photochemical reaction.
Is Photodissociation of Chlorine Gas exothermic or endothermic?
Photodissociation of Chlorine Gas is endothermic (absorbs energy). The enthalpy change (ΔH) is 242.6 kJ/mol.