Processes > Dissolution and precipitation

Saturation Index vs CO2 addition

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INZILLO:
Hello dear,
I should check how the different saturation indexes vary as a function of the addition of CO2 in the solution.
Are there any examples?
Also can the CO2 be added in moles?

dlparkhurst:

--- Code: ---SOLUTION
pH 7 charge
Ca 1
C(4) 1
END
REACTION 1
CO2 1
0.1 in 2 steps
END
USE solution 1
USE reaction 1
END
--- End code ---

INZILLO:
Thank you very much, Dott.dlparkhurst ? you are an invaluable resource.

What I need to do is dissolve CO₂ in a solution, monitor the pH variation, and check for the formation of carbonates.

Based on your previous response:
SOLUTION
pH 7 charge
Ca 1
C(4) 1
END
REACTION 1
CO2 1
0.1 in 2 steps
END
USE solution 1
USE reaction 1
END


NEXT
SOLUTION
pH 7 charge
Ca 1
C(4) 1
END
REACTION 1
CO2 1
0.1 in 2 steps
END
EQUILIBRIUM_PHASES
Calcite 0 0
USE solution 1
USE reaction 1
END


Would this be correct?
Is it always a good idea to add equilibrium phases?


Thanks

dlparkhurst:
You will have to decide if your script does what you want. The output file has all of the information.

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