Chemistry Honors: Class 38

Beautiful Titration Curve

Dates

• Period F: Tuesday, March 5th
• Period A: Wednesday, March 6th
• Period B: Wednesday, March 6th

Lab – Titration Using Digital Methods

• NO SCREEN SHOTS AT ALL
• pH probe must always be stored in solution (do not dry)
• only use about 5 mL of acid to start
• Acid = HCl, base = NaOH
• connect the Airlink THEN connect probes to Airlinks
• might have to try a few times to connect
• be sure and save file after each trial
• do not create a new file for each trial – just press start
• be sure and turn off drops BEFORE stopping data collection
• slow drop rate = pretty data (better chance to stabilize pH

Data Collected in LNB

• initial volume base
• initial volume acid
• final volume acid
• final volulme base
• total drops of base delivered
• drop count @ equivalence point
• (EQ happens with LARGEST jump of pH)

Homework

• No HW
• NOTE: Quiz soon on digital titrations