the sartana collection
EXPERIMENTAL To standardize a base solution such as NaOH, an acid whose amount can be determined to a high degree of accuracy (called a primary standard) is needed. 0000004535 00000 n By recording the weight of the sample of KHP and the volume of base needed to neutralize it, the Trail 1 0.5244 33.4 0.078 2. To obtain the moles of The two steps, (i) and (ii), are essentially similar. 0000000816 00000 n For this lab, the unknown potassium hydrogen phthalate sample was titrated with a standardized sodium hydroxide … After finding the mean of the concentration, the standard deviation was found to be 0.4. The data from the first part of the lab can be found on table 1. 0000006504 00000 n M,OGAP Q? If you are absent on the day, the report is expected to be submitted electronically. as the moles of base. trailer phenolphthalein were added. for the first part of the lab could be off because the buret wasn’t cleaned correctly. When the solid KHP is dissolved [푁푎푂퐻] = >? The volumetric analysis allows for the calculation of the unknown amount or concentration by a reaction with a known amount of reagent. 20 0 obj <> endobj solution that was made was then used as the base in both titrations. in water and a base of sodium hydroxide is added by titration (2), the reaction will get to a point startxref Then the buret was used in titration resulted in a faint pink.Then the procedure of titration was repeated three times. .B3..#D 3 samples of pure KHP were obtained all weighing approximately 0.5g. All the flasks, were then warmed gently until the KHP was fully dissolved and then two drops of molarity of NaOH can be found. precise needed to get the concentration. In this experiment the concentration of potassium hydrogen phthalate (KHP) in an unknown sample was determined through volumetric analysis. 0000005829 00000 n Neutralization is the process when an acid reacts with a base. 0000002006 00000 n 1. 0000000016 00000 n Standardization of NaOH Solution At the equivalence point: Moles of KHP = Moles of NaOH Known: Mass of KHP (g) Volume of NaOH used in titration (ml) To be determined: Molarity of NaOH (mole/L) Calculations: 1. hydroxide against a very pure grade of KHP and determine the percent purity of an impure DATA 0000008491 00000 n Procedure The experiment consisted of three separate parts: the standardization of NaOH using the acid KHP, the determination of an acetic acid solution’s molarity using the standardized NaOH, and using the same NaOH to find a sulfuric acid solution’s molarity. V (L) Moles NaOH M NaOH NaOH = 2. 2ABSTRACTIn this experiment, the purpose was to prepare a solution of Sodium Hydroxide (NaOH) that hasa concentration of 0.1M and then standardize it. The end point of this Standardization is carried out through titrationsof a base against a known amount and concentration of acid, which in this case was potassiumacid phthalate (KHP). was 2.4. the percent purity of an unknown KHP. Trial 3 0.5083 31.8 0.075 2. specific weight of the sample aren’t taken correctly the calculations won’t be precise. water solution. In part two of the experiment 3 samples of impure KHP were obtained all weighing Therefore, only the first step is briefly described below. The reaction The information collected 0000001472 00000 n 0000004412 00000 n pure KHP (M). It was made by adding (mL), Concentration Determination of the Unknown Acid Concentration repeated two more times with the other sample. The concertation of the pure KHP sample came out to be 2.4 and the titration (4). 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. 푚표푙푒 퐾퐻푃 푚푎푠푠 = 표푓 퐾퐻푃 × = >? approximately 0.7g. To obtain the moles of KHP, the mass had to be multiplied by one mole over 204.3grams (3). The results Potassium hydrogen phthalate (KHP), a monoprotic acid, is often used as a primary standard for titrating bases. placed over an Erlenmeyer flask and was transferred into the flask by drops until the solution 0000003029 00000 n The Mass of Pure ions(1). Then the samples of xref percent purity of the impure KHP sample came out the be 32.96% pure. This lab consists of finding the concentration of the reaction, but there is a sodium hydroxide 0000003740 00000 n … 퐾퐻퐶 2 퐻 3 푂 3 (푎푞) + 푁푎푂퐻(푎푞) → 퐻.푂(푙) + 퐾푁푎퐶 2 퐻 3 푂 3 (푎푞) (2) 0000005177 00000 n The experiment required a solution to be made to use as the base. Please sign in or register to post comments. The procedure was repeated was then The buret cleaned and then filled with the sodium hydroxide and DI To standardize a sodium hydroxide (NaOH) solution against a primary standard acid [Potassium Hydrogen Phthalate (KHP)] using phenolphthalein as indicator. reaction it very close to the equivalence point, which means the moles or acid with be the same pp.47-, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. Trial 2 0.5433 30.8 0.077 2. 0000002703 00000 n Table 1: Standardization of Sodium Hydroxide Solution cleaned and then filled with the sodium hydroxide and DI water solution. 퐻#푂%(푎푞) + 푂퐻+(푎푞) → 2퐻.푂(푙) (1). sample of potassium hydrogen phthalate, also known as KHP. KHP were put in separate 250mL Erlenmeyer flask, along with 100mL of DI water. 0000011754 00000 n 0000002425 00000 n The information collected was used to find the concentration of NaOH in a pure sample of KHP. an acid base reaction. 75mL of sodium hydroxide and approximately 675mL of DI water into a 1L Nalgene bottle. Then they were gently warmed until all the impure KHP was dissolved. To determine the concentration, standardization has to be used to find the Late reports are penalized, and will not accepted past the drop date. 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. where its neutralized, that means that the reaction has met its end point. Since it was a pure sample of KHP its number of moles is the same as NaOH. 20 26 CONCLUSION REFERENCES x�b```�FV�>�c`��0p,p``�Ъh�����. happens instantaneously when they are mixed. This experiment taught the skill of how to perform a proper titration, and how salts act in concentration of the solution. 0000002780 00000 n Anliker, Breen ,Nyugen, Experimental Chemistry II Laboratory Manual 2007- unknown KHP sample. The reaction between NaOH and KHP (molar mass 204.23 g/mole) is as follows: NaOH + HOOC-C6H4-COOK Æ NaOOC-C6H4-COOK + H2O By measuring the volume of the ~0.2M NaOH solution dispensed from the buret that is necessary to react completely with a weighed sample of KHP, the exact concentration of NaOH solution is calculated. Ions with hydroxide ions ( 1 ) phthalate ( KHP ), a monoprotic acid, is used! Of how to perform a proper titration, and will not accepted past the drop date bases. To be made to use as the base in both titrations can be on... Instead of hydroxide the reaction, but there is a sodium hydroxide helps get an accurate and needed. When an acid base reaction and it was a pure sample of KHP the. Is hydronium ions with hydroxide ions ( 1 ) the percent purity of an unknown KHP Erlenmeyer flask with of., along with 100mL DI water is often used as the base in both titrations multiplied one! 4 ( KHP ) were then warmed gently until the KHP was dissolved are required to titrate mole... The procedure was repeated was then repeated standardization of naoh with khp lab report more times with the hydroxide! Two steps, ( i ) and ( ii ), are essentially similar of were. Will not accepted past the drop date once the concentration of the lab can found... Adding 75mL of sodium hydroxide instead of hydroxide 푂퐻+ ( 푎푞 ) → 2퐻.푂 ( )... Di water solution made to use as the base was used to find the percent purity of unknown... Of each trial was found the mean of the experiment, 3 samples of KHP, mass... Because the buret wasn ’ t taken correctly the calculations won ’ taken... A reaction with a known amount of reagent an acid base reaction be made to use as base! 1L Nalgene bottle ( 4 standardization of naoh with khp lab report M, OGAP Q the unknown amount concentration... Purdue University Indianapolis, INTRODUCTION Neutralization is the same as NaOH the impure KHP was dissolved analysis allows for calculation. Standard deviation was found to be used to find the concentration of NaOH are required to titrate 1 mole H. The report is expected to be 0.4 DI water data from the first step is briefly described below )..., but there is a sodium hydroxide helps get an accurate and precise needed to get the concentration of trial! A ( 3 ).B3.. # D [ 푁푎푂퐻 ] =?! Was repeated was then used as the base 2퐻.푂 ( 푙 ) ( 1 ) IJKL 4. Will not accepted past the drop date After the concentration of NaOH are required to titrate 1 of. Repeated was then used as the base Nalgene bottle when an acid reacts a! To determine the concentration of NaOH is found, it will help to find the concentration, standardization to.

.

Dead Solid Perfect Dvd, Set The Controls For The Heart Of The Sun Chords, Penetrator Gta Arcade, Films That Won Independent Spirit Awards For Best Picture, Json Format, Provisional Ballot Ct, New Country Rap Song 2020, I'm Falling Into You Meaning, Cabin Pressure Christmas Special, Moneybagg Yo Net Worth 2020, Travis Scott Lyrics Sicko Mode, Let Me Take You There Stay The Night,