A. Determining Unknown:
1. Record your procedure in an orderly step by step manner on your the Report Sheet.
2. Follow your procedure and record any data in the Quantitative Results section of the Report Sheet. Make any needed adjustments to the procedure as you proceed.
3. In the conclusion section of the Report Sheet, answer the question about your unknown, using your results to back up your conclusion. State your conclusion clearly, so that anyone reading your report will understand how you arrived at the conclusion.
Materials:
• 1.00 M acetic acid solution
• 1.00 M carbonic acid
• Anhydrous sodium acetate solid
• Anhydrous sodium carbonate solid
• Anhydrous sodium bicarbonate solid
• 5.00 L deionized H2O
• 100 mL graduated cylinder
• 50 mL graduated cylinder
• Metal spatula
• Weighing boat
• 1.0 L beaker (3)
• Glass stirring rod
Task:
Use the experimental methods discussed in this course and the chemicals given to prepare three 500 mL solutions at the following pH values: 4.5, 6.8, 10.5. In this case your unknown is how to prepare these solutions. Write a procedure for the preparation of the solutions. Include all steps, equipment, chemicals, and the quantities you would use.
A: Determination of Unknown
Question:
Procedures:
Quantitative Results:
Show all your work with any calculations.
Conclusion: