Dear all,
regarding the reversible reaction:
Ca(HCO3)2 -> CO2 + H2O + CaCO3
changing the conditions of temperature or pressure changes the reaction's equilibrium; a high pressure will "push back" a reaction that at ordinary conditions makes products.

My conditions are:
Temperature 20°C maximum
Pressure 70 barg minimum to 170 barg maximum
Gas (mainly Methane) and water with calcium bicarbonate, calcium carbonate and I suppose CO2, that at high pressure is dissolved into the water.

What is the "limit" pressure to which the reaction proceeds to the left?


thanks
Chiara