The Student was obtained a MSc. Degree after discussion of her dissertation under the title: "Study the Thermodynamic Conditions of Clathrate Hydrates Dissociation for Ternary Systems Comprising (Refrigerant, Salt and Water)", which was supervised by Asst. Prof. Dr. Riad Sadiq and Lect. Dr. Shurooq Talib, on (7/6/2018 ) inside Al-Khwarizmi Hall in Chemical Engineering Department-University of Technology. The discussion Committee was comprised of; Asst. Prof. Dr. Hassan Shaker Magdy, Asst. Prof. Dr. Zaidoun Mohsen Shakour and Asst. Prof. Dr. Venus Majid Hamid. The student explained that Hydrate is defined as crystal forms containing water as integral part of the crystal lattice and acts as host for wide range of gases.The present work consists of an experimental and theoretical investigation dealing with hydrate formation for binary system (water+ refrigerant gas) and ternary systems (water+ refrigerant gas+ salt) at different initial pressures. The gas consumed (∆n) of binary system increased with increase initial pressure of hydrate formation. The hydrate dissociation enthalpies of binary and ternary systems were determined by Clapeyron equation .The obtained results of dissociation enthalpy for binary system was (136.21) kJ.mol^-1