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Binary mixtures of some water and alkylamines are characterised by the presence of two distinct liquid phases, one rich in water, the other rich in
Binary mixtures of some water and alkylamines are characterised by the presence of two distinct liquid phases, one rich in water, the other rich in amine. This phase behaviour is of technological interest for CO2 capture, as it has been demonstrated that the boiling temperature of the reboiler can be lowered significantly due to the presence of the miscibility gap. For the mixture of water+dimethylcyclohexylamine (DMCA) the solubility of DMCA in water is reported as 0.00084 mole fraction of DMCA, and that of water in DMCA as 0.25964, at temperature T=343.15K and pressure P=0.1MPa. Using this information, calculate the activity coefficient of water in the amine-rich phase
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