Photosynthesis
6CO2 + 6H2O → C6H12O6 + 6O2
Übersicht
The most important photochemical reaction on Earth. Plants, algae, and cyanobacteria use chlorophyll to capture sunlight and convert carbon dioxide and water into glucose and oxygen. The light reactions split water at photosystem II, while the Calvin cycle fixes CO₂. This reaction produces virtually all atmospheric oxygen and is the foundation of most food chains.
Teilnehmer
| Rolle | Substanz | Koeffizient | Zustand |
|---|---|---|---|
| Reaktant | Carbon Dioxide CO₂ | 6 | (g) |
| Reaktant | Water H₂O | 6 | (l) |
| Produkt | Glucose C₆H₁₂O₆ | 1 | (s) |
Alltägliches Beispiel
Every bite of food you eat and every breath of oxygen you inhale ultimately traces back to photosynthesis.
Industrielle Bedeutung
Photosynthesis fixes about 120 billion tonnes of carbon annually. Artificial photosynthesis research aims to produce clean fuels from sunlight.
Eigenschaften
- Typ
- Photochemical
- Reversibel
- Nein
- Energie
- Endotherm
- ΔH
- 2803,0 kJ/mol
- Katalysator
- Chlorophyll
Verwandte Reaktionen
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
Photodissociation of Chlorine Gas
Silver Bromide Photodecomposition
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for Photosynthesis?
The balanced equation is: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.
What type of reaction is Photosynthesis?
Photosynthesis is a photochemical reaction.
Is Photosynthesis exothermic or endothermic?
Photosynthesis is endothermic (absorbs energy). The enthalpy change (ΔH) is 2803.0 kJ/mol.
What conditions are needed for Photosynthesis?
This reaction requires a catalyst (Chlorophyll).