photochemical reaction, a chemical reaction initiated by the absorption of energy in the form of light. The consequence of molecules' absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules. These new chemical species can fall apart, change to new structures, combine with each other or other molecules, or transfer electrons, hydrogen atoms, protons, or their electronic excitation energy to other molecules. Excited states are stronger acids and stronger reductants than the original ground states.
The reaction is:H2O + CO2 = H2CO3
This reaction is:2 CO2 = 2 CO + O2
no reaction
Example:CaCO3 ---------------------------= CO2 + CaO
CO2 is generally released after a combustion reaction, but it is also released in other chemical reactions.
The chemical reaction is:C9H8O4 + NaHCO3 = C9H7O4Na + H2O + CO2
CO2+H2O
CO2,g + Cs --> 2COg is the chemical reaction equation.
The representation is CO2(g).
c +o2 = co2
ch4 + 2o2 → co2 + 2h2o
ch4 + 2o2 → co2 + 2h2o