TEMPERATURE DEPENDENCE OF HENRY’S LAW CONSTANT OF CHLORINE an‎d HYDROGEN CHLORIDE IN POLYCHLORINATED ETHANE SOLVENTS

Henry s law constants KH of Chlorine and hydrogen chloride were determined in 1,2-dichloroethane(DCE), 1,1,2-trichloroethane (TCE) and 1,1,2,2-tetrachloroethane (TetCE) solvents at atmospheric pressure. Measurements were obtained in a temperature range between 20.80 °C for chlorine and between0.60 °C for hydrogen chloride. Linear regression analysis of the temperature dependence of KH fits Van t Hoff .type equation from which enthalpy of dissolution DHdis for chlorine and hydrogenchloride can be derived. It was found that the values of ΔHdis for chlorine and hydrogen chloride rangebetween -32 -25 kJ mol^-1 and -23 . -11 kJ mol^-1 respectively depending on the solvent.