PHASE EQUILIBRIUM DEFINITIONS K-value Ki=y/A For an ideal system K=Pi()/P o Relative Volatility ak of component with respect to component k a n=K Kk 0/6/99 Equilibrium Staged separations0/6/99 Equilibrium Staged Separations 3 PHASE EQUILIBRIUM DEFINITIONS u K-value Ki Ki = yi /xi For an ideal system Ki = Pi S (T)/ P u Relative Volatility ajk of component j with respect to component k ajk = Kj / Kk