CHEM 1214 Midterm: Midterm Exam #1 Answer Key
31 Mar 2016
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2 mid-term #1 section 003 mwthurs february 19th, Directions: circle your answers on all questions on the exam prior to bubble it into the scantron. The total possible score for this exam is 150 points (for 100%). Pressure units and conversions and kinetic energy ekin=1/2 murms. Stp is p = 1 atmosphere; t = 0 c (273 k) Universal gas constants: r =0. 08206 l atm/mole k or r=8. 314 joules/mole k. Hsoln = hion ion + hdipole-dipole + h ion-dipole (where hion ion = u) For nacl as example: u = hf - hbe - hea - hsub - hie1 ln. Rault"s law: ptotal = 1p1 + 2p2 + 3p3 + where i = mole fraction of component i, and. Pi = equilibrium vapor pressure of pure volatile component at a given temperature. Kb = boiling point elevation constant of solvent; m = molality. Kf = freezing point depression constant; m = molality.
