Chemistry Honors – Class 22

Dates

• Period B: Tuesday, February 24th
• Periods D, G: Wednesday, February 25th

Lab Activity: Standardization of NaOH

• Purpose: the purpose of the lab is to determine the concentration of a solution of NaOH using a known solution of HCl
• Method: The student teams will conduct a titration using phenolphthalein as an indicator

Questions

• How does phenolphthalein work to determine the end point?
• What is the minimum uncertainty in using this method to determine molarity?
• What is the balanced reaction for this process?
• How does the process of “conditioning” prepare the equipment for use?
• What data should be collected?
• What calculations should be performed?

Homework

• Complete the necessary calculations for the lab in the LNB

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