Fig. 7
P–T phase (a) and T–\( {\text{X}}_{{{\text{CO}}_{ 2} }} \) (b) diagrams for the indicated reactions. \( {\text{P}}_{{{\text{CO}}_{ 2} }} \) + \( {\text{P}}_{{{\text{H}}_{ 2} {\text{O}}}} \) = Ptot. a: \( {\text{X}}_{{{\text{CO}}_{ 2} }} \) values are labelled on each couple of curves. Plotted with winTWQ (version 2.32) software (Berman 1991) and relevant database