If the vapours are compressed further, at what pressure, almost complete condensation of vapours wil — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Almost complete condensation occurs at the bubble point, where the liquid composition equals the initial overall composition ($X_A = 0.4$, $X_B = 0.6$). The bubble point pressure is $P_{\text{bubble}} = P_A^\circ X_A + P_B^\circ X_B = 0.4(0.4) + 0.6(0.6) = 0.16 + 0.36 = 0.52 \text{ bar}$. Therefore, correct answer is C.