Dissolution after 180 minutes according to surface area
1
0.9
0.8
dissolved CaCO3 [g]
0.7
0.6
0.5
0.4
0.3
Klintholm Chalk
0.2
Merck Calcite
0.1
0
0
0.5
1
1.5
surface area [m2/g]
2
2.5
3
Figure 1: Dissolved mass concentrations resulting from defined amounts of Klintholm Chalk and inorganic Merck Calcite after 3 hours of exposure
to 0.2 l deionised, CO2 saturated water. Values are plotted against the surface area, which varies according to the initial amount. Even though
chalk provides a much higher exposed surface area and therefore increased reactiveness, the dissolution is less effective in comparison to that of
pure calcite. This demonstrates that CO2 affects chalk differently than calcite.