Mass of POTASSIUM ACID PHTHALATE (to 0.0001 g) 0.5005 0.5423 0.5673 0.5943
Moles of POTASSIUM ACID PHTHALATE 0.002451 0.002655 0.002778 0.002910
Final volume of Sodium hydroxide (to 0.01 mL) 33.30 35.70 37.10 39.00
Initial volume of Sodium hydroxide (to 0.01 mL) 1.09 0.71 0.59 0.70
Volume of Sodium hydroxide delivered (to 0.01 mL) 32.21 34.99 36.51 38.3
Volume of Sodium hydroxide delivered (in liters) 0.03221 0.03499 0.03651 .0383
Moles of Sodium hydroxide 0.002451 0.002655 0.002778 0.002910
Molarity of Sodium hydroxide per trial .07609 0.07589 .07609 0.07598
Average Molarity of Sodium hydroxide 0.07605
Standard Deviation in Average Molarity 6.068*10-5
Percent Variation in Average Molarity
(MUST be < 1% of the mean value) .079784562 Reported Value for Sodium hydroxide Molarity: 0.07605 M ± 6.068E-05 M (average) (standard deviation)
Reported Value for Sodium hydroxide Molarity: 0.07605 M ± 6.07E-05 M (average) (standard deviation) Table 2: TITRATION OF AN UNKNOWN SAMPLE CONTAINING POTASSIUM ACID PHTHALATE Sample Trial 1 2 3
Mass of the POTASSIUM ACID PHTHALATE unknown (to 0.0001 g) 0.5028 0.5165 0.5263 0.5394
Final volume of Sodium hydroxide (to 0.01 mL) 15.55 30.70 16.11