x�b```�FV�>�c`��0p,p``�Ъh�����. It was made by adding After finding the mean of the concentration, the standard deviation was found to be 0.4. 0000009061 00000 n Mass of Pure Indiana University - Purdue University Indianapolis, INTRODUCTION an acid base reaction. In part one of the experiment, 0000006504 00000 n Trial 2 0.5433 30.8 0.077 2. Then the samples were put in separate 250mL Erlenmeyer flask with 100mL The end point of this 20 26 unknown KHP sample. <<9A94FD09BBA6FA4183EA7C66912994AD>]>> 0000003740 00000 n 0000007137 00000 n Lab 20G: Standardization of NaOH Name: Block: Group Members: Date: / / 2018 Due Date: Drop Date: The report is submitted in full, on the due date. reaction it very close to the equivalence point, which means the moles or acid with be the same 75mL of sodium hydroxide and approximately 675mL of DI water into a 1L Nalgene bottle. placed over an Erlenmeyer flask and was transferred into the flask by drops until the solution 0000004535 00000 n The results sample of potassium hydrogen phthalate, also known as KHP. as the moles of base. For this lab, the unknown potassium hydrogen phthalate sample was titrated with a standardized sodium hydroxide … If you are absent on the day, the report is expected to be submitted electronically. approximately 0.7g. 1. The experiment involves two steps: (i) Standardization of sodium hydroxide (NaOH) solution using potassium hydrogen phtalate (KHP) solution, and (ii) titration of an unknown monoprotic acid solution using the standardized NaOH solution. Standardization is carried out through titrationsof a base against a known amount and concentration of acid, which in this case was potassiumacid phthalate (KHP). percent purity of the impure KHP sample came out the be 32.96% pure. 0000002425 00000 n 0000000016 00000 n 0000011754 00000 n M,OGAP Q? Then the buret was placed over an Erlenmeyer flask and was transferred into the The concertation of the pure KHP sample came out to be 2.4 and the 0000001328 00000 n 0000015137 00000 n 20 0 obj <> endobj KHP were put in separate 250mL Erlenmeyer flask, along with 100mL of DI water. Anliker, Breen ,Nyugen, Experimental Chemistry II Laboratory Manual 2007- 0000002780 00000 n REFERENCES happens instantaneously when they are mixed. The buret cleaned and then filled with the sodium hydroxide and DI Then the samples of titration (4). was 2.4. To obtain the moles of pp.47-, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. solution that was made was then used as the base in both titrations. DATA Since it was a pure sample In part two of the experiment 3 samples of impure KHP were obtained all weighing Please sign in or register to post comments. 0000002703 00000 n Once the concentration of NaOH is found, it will help to find cleaned and then filled with the sodium hydroxide and DI water solution. of KHP its number of moles is the same as NaOH. was used to find the concentration of NaOH in a pure sample of KHP. Objective To make a standard solution of Potassium hydrogen phthalate C 8 H 5 KO 4 (KHP). The volumetric analysis allows for the calculation of the unknown amount or concentration by a reaction with a known amount of reagent. 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