1. Why would it be difficult to perform an extraction using acetone and water? A. Acetone precipitates out of water so there will only be one liquid layer. B. Acetone and water are miscible so there will only be one liquid layer. C. Acetone and water form a third layer when mixed together. 2. Would adding NaCl to a test tube containing water, ether and methylene blue increase or decrease the amount of dye in the aqueous layer? Why? A. Increase solubility of dye in water because increased ionic strength increases solubility of organic molecules in water. B. Increase solubility of dye in water because increased ionic strength decreases solubility of organic molecules in water. C. Decrease solubility of dye in water because increased ionic strength increases solubility of organic molecules in water. D. Decrease solubility of dye in water because increased ionic strength decreases solubility of organic molecules in water. 3. Compound Y has a solubility of 2.0g/100mL in water and 20.0g/100mL in ether. What mass of compound Y (in g ) would be removed from a solution of 1.4g of Y in 100mL of water by a single extraction with 100mL of ether? 4. What TOTAL mass (in g ) of compound Y would be removed from the original water solution in question 3 by two extractions using 50mL of ether each time? 5. During an extraction a student loses track of which layer is the organic layer. How could she determine which layer is the aqueous phase? A. Compare the colour of each layer to the colour of the solvent. B. Add drops of water and observe which layer the drops join. C. Add more sample and see which layer it dissolves in. D. Mix the layers again and watch carefully as they separate