based on the six given solvents, which of the following answers lists all of the solvents that are suitable for liquid-liquid extraction of an aqueous layer? 1. n-octanol 2. diethyl ether 3. acetonitrile 4. hexanes 5. pyridine 6. dichloromethane a. n-octanol, diethyl ether, hexanes, and dichloromethane b. n-octanol, acetonitrile, and hexanes c. acetonitrile and pyridine d. hexanes, pyridine, and dichloromethane e. diethyl ether and hexanes g