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Unformatted text preview: 3.3. IDEAL MIXTURES OF IDEAL GASES 83 units J ) for the binary mixture must be U = mu = m A u A + m B u B , (3.97) = m parenleftBig m A m u A + m B m u B parenrightBig , (3.98) = m ( c A u A + c B u B ) , (3.99) u = c A u A + c B u B . (3.100) For the enthalpy, one has H = mh = m A h A + m B h B , (3.101) = m parenleftBig m A m h A + m B m h B parenrightBig , (3.102) = m ( c A h A + c B h B ) , (3.103) h = c A h A + c B h B . (3.104) It is easy to extend this to a mole fraction basis rather than a mass fraction basis. One can also obtain a gas constant for the mixture on a mass basis. For the mixture, one has PV = n RT mRT, (3.105) PV T mR = n R, (3.106) = ( n A + n B ) R, (3.107) = parenleftbigg m A M A + m B M B parenrightbigg R, (3.108) = parenleftbigg m A R M A + m B R M B parenrightbigg , (3.109) = ( m A R A + m B R B ) , (3.110) R = parenleftBig m A m R A + m B m R B parenrightBig , (3.111) R = ( c A R A + c B R B ) . (3.112) For the entropy, one has S = ms = = m A s A + m...
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This note was uploaded on 11/26/2011 for the course EGN 3381 taught by Professor Park-sou during the Fall '11 term at FSU.
- Fall '11