Chemistry Honors – Class 49

Beautiful Titration Curve

Dates

• Periods A, C, D: Tuesday, April 29th

Lab Notes

• known solution [OH-1] = 1.012 M
• record initial and final volumes of both acid and base
• use about 3 mL of acid to begin
• you will use two PASCO Airlink connectors: drop counter and pH meter
• determine the total drops for the base used to get the volume per drop
• Q: how do you know the end point of the titration? (Hint: it is NOT @ pH = 7)
• Note: please keep the pH sensor in solution at all times
• Rinse the pH sensor with distilled water when moving between solutions
• conduct 2+ trials
• Drop Count = X axis
• pH = Y axis
• after done with a trial, select data point to get X/Y coordinates

Homework

• finish lab calculations