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18 Nov 2019
EXPERIMENT 5: DETERMINATION OF THE K, OF AN UNKNOWN ACID Name: Date: Instructor Section/Group In-Lab Guidelines (This is a guide to the information you should observe while in the laboratory Record this information on the lab data sheets and turn in the duplicate pages of your observations to your Instructor before you leave the laboratory period.) NEUTRALIZATION OF WEAK ACID WITH BASE ID of unknown Volume of unknown used Concentration of NaOH soln mL Trial 1 Trial 2 Vol pH Vol Vol pH Vol NaOH Reading NaOH Reading pH NaOH Reading NaOH Reading 0.00 0.5 0.00 0.5 13.0 14.5 15.5 16.5 14.0 4.5 15.0 15.5 1.5 3.0 3.5 4.0 5.0 18.0 18.0 185 19.0 5.5 6.5 7.0 7.0 20.0 21.0 215 8.5 9.0 9.5 1006 23.0 10.5 2 23.5 9.0 9.5 8 22.5 23.0 23.5 24.0 10.5 11.0 11.5 12.0 1126 25.0 125L2 11.5 12.0 24.5 25.5 7.24 25.5 This is a guide. You may need only half these entries for your unknown (monoprotic acid), or you may need an additional column (triprotic acid). Remember, continue the titration until you have two pH readings of IL0 or higher for each trial. Expecieent 5T Determination of the , of an Usknown Acid
EXPERIMENT 5: DETERMINATION OF THE K, OF AN UNKNOWN ACID Name: Date: Instructor Section/Group In-Lab Guidelines (This is a guide to the information you should observe while in the laboratory Record this information on the lab data sheets and turn in the duplicate pages of your observations to your Instructor before you leave the laboratory period.) NEUTRALIZATION OF WEAK ACID WITH BASE ID of unknown Volume of unknown used Concentration of NaOH soln mL Trial 1 Trial 2 Vol pH Vol Vol pH Vol NaOH Reading NaOH Reading pH NaOH Reading NaOH Reading 0.00 0.5 0.00 0.5 13.0 14.5 15.5 16.5 14.0 4.5 15.0 15.5 1.5 3.0 3.5 4.0 5.0 18.0 18.0 185 19.0 5.5 6.5 7.0 7.0 20.0 21.0 215 8.5 9.0 9.5 1006 23.0 10.5 2 23.5 9.0 9.5 8 22.5 23.0 23.5 24.0 10.5 11.0 11.5 12.0 1126 25.0 125L2 11.5 12.0 24.5 25.5 7.24 25.5 This is a guide. You may need only half these entries for your unknown (monoprotic acid), or you may need an additional column (triprotic acid). Remember, continue the titration until you have two pH readings of IL0 or higher for each trial. Expecieent 5T Determination of the , of an Usknown Acid
Beverley SmithLv2
15 Jul 2019