(Solved): (v) Study Questions \& Pre-Lab Activity (1) An organic solvent is miscible with water. Briefly expl ...

(v) Study Questions \& Pre-Lab Activity (1) An organic solvent is miscible with water. Briefly explain how one can make the two solvents to be immiscible with each other when performing a liquid-liquid extraction. (2) The solubility of an organic compound \( \mathrm{A} \) in water at room temperature is \( 0.0248 \mathrm{M} \). The solubility of compound \( \mathrm{A} \) in hexane at room temperature is \( 0.196 \mathrm{M} \). Use the equation defined in lecture to calculate the partition coefficient \( (\alpha) \) for compound \( \mathrm{A} \) between the two solvents, \( \alpha_{\text {hexane/water. }} \). ou will need to show your work. Final value should have the correct number of significant figures. (3) Using the result in question #2, calculate the maximum weight (in grams) of compound A that you could extract from water into the hexane layer if you carried out two extractions of \( 2.25 \mathrm{~g} \) of compound \( \mathrm{A} \) in \( 55 \mathrm{~mL} \) of water and extracted with \( 15 \mathrm{~mL} \) of hexane each time. You will need to show your work by using the extraction equation provided in lecture for this question. Report the final value to two decimal places. (4) What information do you need in order to tell which layer is the top layer and which layer is the bottom layer inside a separatory funnel when performing an extraction? Limit you answer to ONE word.