Gas evolution reaction

A gas evolution reaction is a chemical reaction in which one of the end products is a gas such as oxygen or carbon dioxide. Gas evolution reactions may be carried out in a fume chamber when the gases produced are poisonous when inhaled or explosive.

Examples

• A replacement reaction concerning zinc metal and dilute sulfuric acid.

${\displaystyle {\ce {Zn + H_2SO_4 (dil) -> ZnSO_4 + H_2 ^}}}$

In this example, diatomic hydrogen gas is released. Dilute hydrochloric acid can be used in place of dilute sulfuric acid.

• A replacement reaction where gaseous hydrogen chloride and fluorine gas react to release diatomic chlorine gas (because fluorine is more electronegative):

${\displaystyle {\ce {2HCl + F_2 -> 2HF + Cl_2 ^}}}$

See also

• Gasogene
• Kipps apparatus
• Gas generator
• Thermal decomposition
• Oxygen evolution

References

1. Chemical evolution
2. Oxygen evolution
3. Hydrogen evolution reaction
4. Gas generator
5. Dart gun
6. Combustion
7. Coal gas
8. Chichibabin reaction
9. Chemical reaction
10. Industrial gas
11. Hydrogel
12. Stellar evolution
13. Carbon dioxide
14. Methane
15. Photosynthesis
16. Hydrogen
17. Alkaline water electrolysis
18. Zyklon B
19. Proton exchange membrane electrolysis
20. Thermite