10. For a distillation column separating ethyl-ether(1)/ ethanol(2) into essentially pure components at 1atm, find the range of values of a 12 (relative volatility). S = = Data: In P1 = 9.25-2420.72 / (T-45.72), InP2 * = 12.17 - 3737.60 / (T-44.17), where P (bar), T(K), For the liquid phase, GE/x1x2 RT = A21 X1 + A12 X2 , A12= 0.1665+233.74/T;A21 = 0.5908+197.55/T. = [012(x; 1) = 2.2, Q12( x2 +1) = 8.64]