An experimental apparatus consists of two isolated compartments separated by a perfect semipermeable — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

The effective particle concentration (osmolarity) dictates osmotic pressure ($\pi = iCRT$). For $NaCl$ ($n=2$), osmolarity = $2 \times 0.10 = 0.20\text{ osmol L}^{-1}$ (A). For $BaCl_2$ ($n=3$), osmolarity = $3 \times 0.08 = 0.24\text{ osmol L}^{-1}$ (B). Since Side Y has a higher effective concentration ($0.24 > 0.20$), Side Y is hypertonic, and Side X is hypotonic (making C false). Osmosis always drives solvent from the hypotonic side to the hypertonic side to dilute it, so water moves from X to Y (D).