H 4. At 25 C, the Henry's law constant (KH) for n-butanol in water is 130 [mol/(kg bar)], the saturation vapor pressure is psat=8.75x10-9 bar. Henry's Law:C;(molal) = K, P (bar). At constant temperature, the activity coefficient for water in mixtures of n-butanol and water is given by: Iny. = A(1-x) and lnk = 720 for k(bar) & T(K) 81T = w = Pini a) What is the infinite dilution activity coeficient for n-butanol in water if the standard state for n- butanol is chosen as pure n-butanol? b) What is the solubility of n-butanol in water at 25 C? c) What is the Henry's law constant, k (bar), for n-butanol in water at 40 C? P;(bar) = x;k;(bar) 1