Question

Substances A and B are both volatile liquids with p*_A = 280. Torr, p*_B = 260. Torr, and K_B = 200 Torr (concentration expressed in mole fraction). When X_A = 0.9, b_B = 2.22 mol kg^−1, p_A= 250 Torr, and p_B = 25 Torr. Calculate the activities and activity coefficients of A and B. Use the mole fraction, Raoult's law basis for A and the Henry's Law basis system (both mole fractions and molalities) for B.

Question: For B (Henry's law basis; concentration in molality)

a_{B =?}

γ_{B =?}