I need to write a lab plan based on preparing a standardsolution-- Standardization of NaOH (aq)
Experiment 8: Preparing a Standard Solution—Standardization ofNaOH(aq) Learning Objectives » to understand the meaning of theterm primary standard » to learn how to determine the preciseconcentration of a solution » to learn how to properly prepare, useand read a buret » to practice titration techniques andcalculations » to learn how to weighing by difference Read andcomplete the Prelab Assignment for Experiment 8 (Chemistry 121 LabMoodle site). Note that these assignments are always due the Sundaythe week of lab, by 5 PM. Safety: 3.0 M sodium hydroxide ishazardous and will attack skin and clothing rapidly. Don't wearexpensive clothes to lab. Flood any spills with water and ask yourinstructor or assistant for help. Wear goggles! If solutions aresplashed on your face, call for help and use the eyewash. Materials3 M NaOH, solid KHP (potassium hydrogen phthalate) dried, inweighing bottles, phenolphthalein indicator solution, one buret,four 250-mL Erlenmeyer flasks. Disposal The solutions of KHP anddilute NaOH should be neutralized (5 < pH < 9) and only thenmay be poured down the drain with lots of water. This is askill-building experiment, where you will have to work carefullyand use equipment skillfully in order to achieve good results.Learning good titration techniques will be helpful in subsequentlabs, not only as specific skills, but they illustrate theexcellent results that can be achieved if sound technique isemployed. Students can work individually or in pairs on thisexperiment. Remember, it's up to you to make sure that you takepart in all lab activities!
