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The following titration curve is expected from which acid-base pair?
See the picture below.
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- Molarity of the standard solution of sodium hydroxide = 0.1010 mol/L %3D Volumes of NAOH(aq): Third Rough titration First Second titration titration titration Final burette reading: 18.48 33.58 48.40 23.72 (mL) Initial burette reading: (mL) Volume of NaOH(aq) Titrated (added) (mL) 3.48 18.48 33.60 8.73 Fourth Fifth titration titration Final burette reading: (mL) Initial burette reading: (mL) Volume of NaOH(aq) Titrated (added) (mL) 38.68 20.62 23.80 5.75 4. (a) The sodium ion did not take part in this chemical reaction. What do we call such an ion? (b) Draw a simple diagram which shows how the sodium ion mixes with water in solution. What do we call this physical process? 4Molarity of the standard solution of sodium hydroxide = 0.1010 mol/L %3D Volumes of NAOH(aq): Third Rough titration First Second titration titration titration Final burette reading: 18.48 33.58 48.40 23.72 (mL) Initial burette reading: (mL) Volume of NAOH(aq) Titrated (added) (mL) 3.48 18.48 33.60 8.73 Fourth Fifth titration titration Final burette reading: (mL) Initial burette reading: (mL) Volume of NaOH(aq) Titrated (added) (mL) 38.68 20.62 23.80 5.75 3. What type(s) of reactions occurred in this titration?Molarity of the standard solution of sodium hydroxide = 0.1010 mol/L Volumes of NaOH(aq): Third titration Rough First titration Second titration titration Final burette reading: (mL) Initial burette reading: (mL) Volume of NaOH(aq) 18.48 33.58 48,40 23.72 3.48 18.48 33.60 8.73 Titrated (added) (mL) Fourth Fifth titration titration Final burette reading: (mL) Initial burette reading: (mL) Volume of NaOH(aq) Titrated (added) (ml 38.68 20.62 23.80 5.75 4 6. Calculate the molarity of the stock solution of H2SO4.
- A titration was performed to find the concentration of hydrochloric acid and the following results were obtained Trial Molarity 1 1.25 ± 0.01 2 1.24 ± 0.01 3 1.26 ± 0.01 The actual concentration of HCl was determined to be 1.000 M; the results of the titration are: Group of answer choices accurate and precise accurate but not precise inaccurate but precise inaccurate and imprecisePart A: Standardization of a Sodium Hydroxide Solution Titration 1 Titration 2 Titration 3 Mass of 125 mL flask 45.849g 46.715g 44.953g Mass of flask and KHP 46.849g 47.745g 46.003g Initial buret reading (mL) 0.5 ml 0.5 ml 0.5 ml Final buret reading (mL) 27.8 ml 26.5 ml 26.7 ml Volume of NaOH used (mL) 45.11 ml 45.06 ml 45.14 ml Calculations Titration 1 Titration 2 Titration 3 Moles of KHP Moles of NaOH Molarity of NaOH Average Molarity of NaOH: _______________A titration of 29.2 mL of a solution of the weak base aniline, C@HNH, ( K 4.0 x 10-10), requires 21.61 mL of 0.155 M HCl to reach the equivalence point. CH_NHz(aq) + HyO* (aq) + C,H,NH, (aq)+H,O(l) a What was the concentration of aniline in the original solution? Concentration 0115 ✔ M The equivalence point for a reaction is the point at which one reactant has been completely consumed by addition of another reactant. Thus, [C,HNH] [H₂O+] [OH-]- = 0.155 mol HC1 1.00 L 1 29.2 mL b What are the concentrations of H₂O¹, OH, and C6H5NHs at the equivalence point? M C = 0.115 M x 21.61 ml x M Correct 1 mol C, H, NH, 1 mol HCl Show HintA 0.9600 M NaOH solution was diluted with a factor of 4.Then the diluted solution of NaOH was titrated against an unknown acid.The volumes of NaOH(aq) titrated are shown in the table below.Volumes of NaOH(aq):RoughtitrationFirsttitrationSecondtitrationThirdtitrationThirdtitrationFinal burette reading:(mL)19.00 34.05 20.86 36.01 23.57Initial burette reading:(mL)19.00 19.07 5.76 21.02 8.54The molarity of the unknown acid is 0.08108 M and the volume of the unknown acid used ineach titration is 14.80 mL.(i) Was the unknown acid monoprotic, diprotic or triprotic? Show your calculations andreasoning.(ii) What type of chemical reaction is this? _________________ or _______________A hydrochloric acid solution is standardized by titrating 0.5008 g of primary standard tris(hydroxymethyl) aminomethane, C4H11NO3, with 99.9780% purity. If 39.68 mL isrequired for the titration, what is the molarity of the acid?A student carries out a titration to determine the molar mass and structure of a weak acid A. The student follows the method below. Dissolve a weighed mass of A in 100 cm3 of distilled water and make the solution up to 250 cm in a beaker. Add the solution of A to a burette. Titrate the solution of A with a standard solution of sodium hydroxide, NAOH. (a) What is meant by the term standard solution? (b) Sodium hydroxide is an alkali. What is meant by the term alkali? (c) The student carries out a trial, followed by three further titrations. The diagram shows the initial and final burette readings for the three further titrations. The student measures all burette readings to the nearest 0.05 cm3. Titration 1 Titration 2 Titration 3 Initial reading Final reading Initial reading Final reading Initial reading Final reading 27Direct titration: 10.90 ± 0.02 mL of an unknown KHP solution required 11.72 ± 0.02 mL of 0.1090 ± 0.0006 M NaOH to reach the end point. What is the concentration of KHP in the unknown solution reported with absolute uncertainty? If the unknown solution was prepared by dissolving 5.128 g of the unknown KHP (204.22 g/mol) in 100.00 mL of water, what is the weight percent of KHP in the sample?Na2CO3 served as the primary standard in a titration experiment. Find the molarity of the titrant given the following data in 3 decimal places. Show solutions Primary Standard Used: Na2CO3Formula Mass of 1º standard: 105.99 g/mol% purity of 1º standard: 95% Trial 1 2 3 1º Standard weight, g 0.1005 0.1001 0.0997 Net volume of HCl, mL 9.30 9.00 8.90 Molarity of HCl X1 X2 X3Volume vinegar used (mL)= 5.00 mL % from labe= l5 % Molarity of NaOH = 0.0976 M Titration volume measurements Trial 1 Trial 2 Trial 3 Inital volume NaOH (mL) 0.69 0.86 0.16 Final volume NaOH (mL) 43.47 43.36 43.03 Volume NaOH used (mL) Average volume NaOH used (mL) Average volume NaOH used (L) Moles NaOH used (from avg volume) Moles CH3COOH Molarity CH3COOH (mol/L) Mass CH3COOH (g) % (m/v) CH3COOH in vinegarSEE MORE QUESTIONS