What is the flash point temperature \(\left(ight.\) in \(\left.{ }^{\circ} \mathrm{C}ight)\) of a 50 mole percent mixture of methanol and water? Use Appendix B for the flash point temperature for pure methanol and Appendix C for Antoine equations for vapor pressure.

Data From Appendix B:

Data From Appendix C:

Transcribed Image Text:

Compo und Paraffin hydroca rbons Fo rm ula Heat of combustion (kJ/mol) Lowe Uppe arb 4 Ethane C -142 -155 H 8.6 9.8 Metha CH-802. -890. 5.0 ne 3 3 Flammability limit" (vol. % fuel in air) Butane C4 -265-287 H10 7.5 7.5 e LFL Propan C3 204 -221 2.1 Hg 3.1 e 9.9 3.0 1.8 Isobuta C4 -264 -286 1.8 ne H0 9.0 9.0 Pentan C -324 -353 5.0 6.6 H12 Isopent C -324 -352 1.4 7.6 ane H12 0.3 1.4 UFL 15.0 12.5 9.5 8.5 8.4 7.8 7.6 Flash point Autoignition temperatur temperature el C a oc -188 -135 -104 -60 -83 -40 -57 600 515 450 405 460 260 420