Transcription of VAPOUR PRESSURE FOR LIQUID VAPOUR EQUILIBRIUM
1 0B VAPOUR PRESSURE FOR LIQUID - VAPOUR EQUILIBRIUM Antoine's equation fitting (T in kelvin and p in kPa) Substance Formula A B C Acetylene C2H2 1837 Acetone C3H6O 2976 Ammonia NH3 2363 Argon Ar 833 Benzene C6H6 2949 n-Butane C4H10 2292 Carbon dioxide CO2 1956 Carbon monoxide CO 770 Carbon tetrachloride CCl4 3394 Chloroform CHCl3 2939 Cyclohexane C6H12 2795 n-Decane C10H22 3452 n-Dodecane C12H26 3744 Ethane C2H6 1582 Ethanol C2H6O 3424 Ether C4H10O 2564 Ethyl acetate C4H8O2 2868 Ethylene C2H4 1427 Ethylenglicol C2H6O2 4494 Helium (4He) He 37 n-Heptane C7H16 2933 n-Hexadecane C16H34 4240 -117 n-Hexane C6H14 2714 Hydrazine N2H4 3500 Hydrogen H2 232 Methane CH4 968 Methanol CH4O 3593 Neon Ne 265 Nitrogen N2 658 Nitrogen dioxide* NO2 6615 di-Nitrogen oxide N2O 1840 di-Nitrogen tetroxide* N2O4 6615 Nitrogen monoxide.
2 NO 1548 n-Octane C8H18 3304 iso-Octane (2-2-4 trimethyl pentane) C8H18 2896 Oxygen O2 780 n-Pentane C5H12 2555 Propane C3H8 1873 iso-Propanol C3H8O2 983 Propylene C3H6 1875 R12 CCl2F2 1971 R134a CF3CH2F 2094 R410A** 2118 Sulfur dioxide SO2 2385 Sulfur hexafluoride SF6 1045 Water H2O 3985 Xenon Xe 1340 *There are mixture of dinitrogen tetroxide (N2O4) and nitrogen dioxide (NO2).The NO2/N2O4 EQUILIBRIUM depends on temperature, NO2 being favoured at high temperatures and N2O4 at low temperatures. When condensing, at C at 100 kPa, most of the LIQUID is N2O4 which is colourless or pale brownish, **R410A is a near-azeotropic mixture of R32 (difluoromethane, CH2F2) and R125 (pentafluoroethane, CHF2CF3), 50/50 by weight (70/30 molar), which can be approximated as a pure substance.
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