Division 7 STANDARD CURVE

Into four 100 ml round-bottom flasks (5.1), each containing 3 ml of 30 % aqueous ethanol (4.20), pipette 5, 10, 15 and 20 ml portions of the standard solution (4.15.1) corresponding to 5, 10, 15 and 20 mg of quinolin-8-ol. Proceed as described in 6.2.1.