A student was given an unknown compound dissolved in acetone. The student decided to identify the compound by TLC. The student decides to use a 1:1 hexanes/acetone solvent system. Once the TLC plate was finished running, the student pulls out the TLC to look at it under UV. The student's partner remarks that the spot looked very faint under UV. What would be best for the two students to try next? Redo the TLC plate; it was the students technique that caused the problem. Concentrate the sample solution used. Try to test a 1:9 hexanes/acetone solvent system. Try to test a 9:1 hexanes/acetone solvent system. The compound cannot be identified by TLC. There are two solutions of a-pinene (b.p. - 156 °C, v.p. = 151 torr at 100C) and water (b.p = 100 "Cand v.p. = 760 torr at 100 °C). The molar fraction of a-pinene and water in solution A are 0.60 and 0.40 respectively. The molar fraction of a-pinene and water in solution B are 0.40 and 0.60 respectively. Which statement is true regarding the boiling point of the two solutions? (Hint: a-pinene and water are immiscible) A. Solution A will have a higher boiling point. B. Both solutions will boil at the same temperature. C. Solution B will have a higher boiling point. D. The relative boiling points cannot be determined with the given information. O A. Solution A will have a higher boiling point. O B. Both solutions will boil at the same temperature. O C. Solution B will have a higher boiling point. O D. The relative boiling points cannot be determined with the given information.