However, there has been a deviation of 0.9 cm3, which is significant, but not high. Now, that's different than asking about pH values in the solution, since the actual [H3O(1+)] level is affected by the various equilibrium reactions the salt ions nominally present may have undergone. At the equivalence point in a neutralization, the moles of acid are equal to the moles of base. moles of KHP are equivalent to moles of NaOH. 4 0 obj This is done with NaOH because its hygroscopic and readily sucks up the moisture in the air. 3 20 0 0 29 3 0 0. This tells you that at you can reach the equivalence point by reacting equal number of moles of #"KHP"# and of #"NaOH"#. To find molarity (concentration = mol/L), convert the 36.78ml of NaOH into L, and divide this into .00278 moles of NaOH J.R. S. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Pell

A: According to the balanced chemical reaction, one mole of HBr reacts with exactly one mole of NaOH question_answer Q: 17.75 How many moles of sodium acetate must be added to 2.0 L of 0.10 M acetic acid to give a KHP (aq) + NaOH (aq) <-> KNaP (aq) + H2O (I). English 123- 3-4 Assignment Submission- Annotating Your Sources, Marketing Reading-Framework for Marketing Strategy Formation, Recrystallization of Benzoic Acid Lab Report, Tina Jones Heent Interview Completed Shadow Health 1, Essentials of Psychiatric Mental Health Nursing 8e Morgan, Townsend, Entrepreneurship Multiple Choice Questions, Calculus Early Transcendentals 9th Edition by James Stewart, Daniel Clegg, Saleem Watson (z-lib.org), SCS 200 Applied Social Sciences Module 1 Short Answers, Ati-rn-comprehensive-predictor-retake-2019-100-correct-ati-rn-comprehensive-predictor-retake-1 ATI RN COMPREHENSIVE PREDICTOR RETAKE 2019_100% Correct | ATI RN COMPREHENSIVE PREDICTOR RETAKE, 1.1 Functions and Continuity full solutions. A student weighs out 0.568 g of KHP (molar mass = 204 g/mol) and titrates to the equivalence point with 36.78 mL of a stock NaOH solution. KHP eqn. Data Table: Titration Part 1: Use the molar mass of KHP to calculate moles of KHP reacted. How many liters (not mL) of NaOH were consumed in this titration? KHP can stand for potassium hydrogen phosphate, or more likely in this case, it stands for potassium hydrogen phthalate (a monoprotic acid). the KHP respectively in the balanced chemical equation. You start with #"0.5100 g"# of #"KHP"#. Conversely, for the titration of a weak base with strong acid, the pH at the equivalence point is less than 7 because only the conjugate acid is present. Nam lacinia pulvinar tortor nec facilisis. The balanced chemical equation for the neutralization of KHP with the base NaOH indicates that the stoichiometric molar ratio is 1. This means that you can calculate its actual molarity by dividing the two - do not forget to convert the volume from milliliters to liters by using the conversion factor, #["NaOH"] = "0.0024973 moles"/(31.70 * 10^(-3)"L") = color(green)(|bar(ul(color(white)(a/a)"0.07878 M"color(white)(a/a)|)))#. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. 2.00 grams was the amount expected to be taken, but the experimental amount was 1.99 grams. The formula and structure for the carboxylic acid KHP is shown in Figure 5.1. Donec aliquet. Lorem ipsum dolor, nec facilisis. 0.00999/0= 0 M, How many mL of your KHP standard were titrated in this trial? Fill in the Table below with the information from questions 6-11 as Trial 1. The percentage uncertainty calculated of the concentration of NaOH was 2.57%, which indicates that the level of precision, although not low, could have been better. * For all 3 trials find the moles of KHC8H4O4 using the grams of 0.02/0= 0 M, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Give Me Liberty! RAW DATA MASSES Trial #1 Trial #2 Trial #3 mass of KHP weighed out: 0.6096_9 _0.6088_9 0.6022_9 VOLUMES burette reading: FINAL 32.65_ m _33.49_ML_30.47ML burette reading: O INITIAL 3.09 mL 4.29 ML 1.19 mL Volume of NaOH used: minus 0 29.56 mL 29.20 ml 29.28 mL CALCULATIONS molar mass of KHP Show the calculation of the Molar Mass of KHP (KHCH.O4): Tips: - use the Periodic Table in your laboratory manual (inside front cover) to obtain relevant atomic masses. The resulting percentage error out of this deviation is: There is almost a 1% deviation.

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