I am doing a science fair project and have a question about the limestone cycle. A typical limestone cycle has 3 parts given below:

Cycle - Part 1:
              CaC03 + Heat -> Ca0 + C02

Cycle – Part 2:
              Ca0 + H20 -> Ca(OH)2

Cycle – Part 3:
              Ca(OH)2 + CO2 -> CaC03 + H20

The question is - Can Part 2 of the above cycle be skipped i.e. the part that requires water? And shorted the cycle as:

Cycle - Part 1:
              CaC03 + Heat -> Ca0 + C02

Cycle – Part 2:
              Ca0 + CO2 -> CaC03

Appreciate help in this.

Thanks
SMathew

Theoretical yes, but then you cannot make concrete.  Everything has to be mixed with water.

Thank you for the reply. For my science project, I plan to use limestone to capture CO2 from the air. If possible, I would like to avoid using water. Can this be achieved?

Thanks

SMathew

 

Should be possible, but you have to find a way to  get a large surface.

Thank you, chenbeier for the help.