Calcite solubility in an open and a closed system

While simulating the two previous exercises 3.1.1.6 and 3.1.1.7 you always assumed that the amount of C02 was unlimited. Such systems are called open systems . In reality, this is very rare. Usually, there is only a restrained amount of gas available (closed system). 

Simulate for the drinking water well B3 the solution of calcite for an open and a closed system using a temperature of 15 °C and partial pressures of 2 and 20 Vol% respectively. Where is the difference between the two systems What changes with increasing partial pressure and why Consider, besides the solution of calcite, changes in pH values, too. 

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Comparison of the calcite solubility in an open and a closed system... 

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