what is molarity, the average molarity, and standard deviation?igmsa SH Titrations - Report SheetNamePart A -- Standardization of NaOHTrial 1Trial 2Trial 3చర్మా గం్యు.05 AL24.8AL 24.4ac 24.3 mL24.6AL 24,35AL 24.3nc.50500fMass of KHPInitial Volume of NaOHFinal Volume of NaOHVolume of NAOH DispensedMolarity of NAOHAverage Molarity of NaOHStandard DeviationCalculations

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what is molarity, the average molarity, and standard deviation? igmsa H Titrations - Report Sheet Name Part A - - Standardization of NaOH Trial 1 Trial 2 Trial 3 500 .05AL 24.8AL 24.4ac 24.3 mL 24.6aL 2635のL df.3nc .50 500 Mass of KHP Initial Volume of NaOH Final Volume of NaOH Volume of NAOH Dispensed Molarity of NAOH Average Molarity of NaOH Standard Deviation Calculations

what is molarity, the average molarity, and standard deviation? igmsa H Titrations - Report Sheet Name Part A - - Standardization of NaOH Trial 1 Trial 2 Trial 3 500 .05AL 24.8AL 24.4ac 24.3 mL 24.6aL 2635のL df.3nc .50 500 Mass of KHP Initial Volume of NaOH Final Volume of NaOH Volume of NAOH Dispensed Molarity of NAOH Average Molarity of NaOH Standard Deviation Calculations

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.18QAP

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Concentration sodium thiosulfate solution used: 0.056 mol L-1 ACCURATE TITRATION VOLUME OF SODIUM THIOSULFATE SOLUTION USED Volume titration 1, (ml) Volume titration 2, (ml) Your Group 15.80 15.75 Group 1 16.05 15.70 Group 2 16.30 16.25 ANALYSIS Average volume used, (mL) Standard deviation Number of moles sodium thiosulfate used, (mol) Number of moles calcium iodate in solution, (mol) Volume of calcium iodate used, (mL) Concentration of saturated calcium iodate solution (mol L-¹) Unrounded value 15.9750 0.26220 Rounded value 15.97 0.262 10.0
Concentration sodium thiosulfate solution used: 0.056 mol L-1 ACCURATE TITRATION VOLUME OF SODIUM THIOSULFATE SOLUTION USED Volume titration 1, (mL) Volume titration 2, (mL) Your Group 15.80 15.75 Group 1 16.05 15.70 Group 2 16.30 16.25 ANALYSIS Average volume used, (ml) Standard deviation Number of moles sodium thiosulfate used, (mol) Number of moles calcium iodate in solution, (mol) Volume of calcium iodate used, (mL) Concentration of saturated calcium iodate solution (mol L-¹) Unrounded value 15.9750 0.26220 0.00089400 0.00036700 A Rounded value 15.97 0.262 8.94 x 10-4 10.0 Minimize
SCE students measured the concentration of HCl in a solution by titrating with different indicators to find the end point.Indicator Mean HCl concentration (M)(± standard deviation)Number of measurementsBromothymol blue 0.09565 ± 0.00225 28Methyl red 0.08686 ± 0.00098 18Bromocresol green 0.08641 ± 0.00113 29Is the difference between indicators 1 and 2 significant at the 95% confidence level? Answer the same question for indicators 2 and 3
Students measured the concentration of HCl in a solution by titrating with different indicators to find the end point. (Use the table to find critical F values.) Mean HCl concentration (M) (+ standard deviation) Indicator Number of measurements 1. Bromothymol blue 0.09565 + 0.00170 28 2. Methyl red 0.08681 ± 0.00098 18 3. Bromocresol green 0.08641 + 0.00106 29 Is the difference between Indicators 1 and 2 significant at the 95% confidence level? O Yes O No Fenlculated clegrees of freedom Ecalculated Is the difference between indicators 2 and 3 significant at the 95% confidence level? O Yes O No Fealculated Spooled tcalculated
Table A: Standard NaCl used to make primary standard solution Mass of weighing bottle + NaC1 (g) 21.8720 Mass of weighing bottle after transfer (g) 21.772 Mass of NaCl used in solution (g) 0.6948 Purity of NaCl (%) 100.03 Table A: unknow used to make primary standard solution Mass of weighing bottle + unknow (g) 16.8777 Mass of weighing bottle after transfer (g) 16.20010 Mass of unknow used in solution (g) 0.6776 Purity of unknow (%) Table C: Titration of 25.00 mL aliquots of NaCl with AGNO3 Trial 1 Trial 2 Trial 3 Final Burette Reading (mL) 28.29 24.79 25.11 Initial Burette Reading (mL) 4.99 1.49 1.69 Volume Added (mL) 23.30 23.30 23.42 Table C: Titration of 25.00 mL aliquots of unknow with AGNO3 Trial 1 Trial 2 Trial 3 Final Burette Reading (mL) Initial Burette Reading (mL) 23.99 22.45 26.91 2.89 1.25 5.61 Volume Added (mL) 21.10 21.20 21.30
You collected the following data from a titration experiment using a 0.123M standardized NaOH solution to titrate a 27.36 mL solution with an unknown Molarity concentration (M) of sulfuric acid (H2SO4). Initial Final Vol Delivered |(mL) Burette Burette Reading (mL) Reading (mL) Trial 1 0.56 19.20 ?? Trial 2 0.57 19.7 Trial 3 0.92 19.56 For just Trial 1, determine the amount of NaOH delivered for the titration with appropriate significant digits. Do not include units. Answer:
In this double titration experiment determining composition of soda ash, you are given the following data: M HCl titrant: 0.0501 M +/- 0.0507 Mass of soda ash sample, g: 0.2505 ± 2.0e-4 (Analytical Balance) Total volume of Sample Stock, mL: 75 ± 0.05 (100mL graduated cylinder) Volume of Sample Stock Aliquot, mL: 25 ± 0.3 Find the missing information. Show solutions
M 23 (H) Inorganic Analytical Chemistry pard My courses CHEM 23 (H) FS-AY:20-21 Week 4-5: Quantitative Analysis by Gravimetry and Titration Quiz 4 Qu 10 The 500.0-mg sample of impure Na2 CO3 (FM: 105.96) required 22.00 mL of the HCI standard solution (the obtained concentration of HCI from the previous question, problem 5: Titrimetry short answer type) for complete neutralization. ut of 1. Give the balanced chemical equation between the sample, Na2CO3 and the standard, HCI. 2. What is the mass (g) of Na, CO3 in the sample? 3. Calculate the % (w/w) purity of a 500.0-mg sample of impure Na2 CO3 Note: Type your solution here or upload its pic in Jpeg or pdf format. Another option is to send it to me via email (subject: Fam name-Quiz 4) or messenger, privately. Do not forget to box the final answer and write your name. В I 1.
DATA AND RESULTS: Titration Data (Standardization of EDTA) Example II Mass, g Caco, 0.0250 0.0251 0.0246 0.0254 Final reading, mL 25.00 24.91 24.87 25.31 Initial Reading, mL 0.00 0.02 0.02 0.02 Volume, mL EDTA 25.00 Molarity of EDTA, M 0.009992 B. Analysis Data Example II Volume of Sample, mL 25.00 24.90 25.10 25.0 Final reading, mL 27.46 25.08 25.06 24.99 Initial Reading, mL 0.00 0.02 0.02 0.02 Volume of EDTA, mL 27.46 Molarity of EDTA, M 0.009992 Ca" concentration, ppm 440 STATISTICAL EVALUATION OF RESULTS Standardization of EDTA Mean, M EDTA Median, M EDTA Standard Deviation Ci for u at 95% Prob. Level Reported value: M EDTA Ca" Concentration Mean, Ca" ppm Median, Ca" ppm Standard deviation Cl for u at 95% Prob. Level Reported value: Ca" ppm
One of the following statements is incorrect Select one: O Back-titration is required when the rate of the reaction slow. O A standard solution should react completely with the analyte without a definite chemical equation. Standardization is required when the titrant solution molarity is approximate. O A primary standard should be highly pure, has atmospheric stability and absence of hydrated water. O Titration error is the difference between equivalence point volume and end point volume.
Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 2.29 1.41 1.95 Molarity of NaOH (M) 0.100 0.100 0.100 Volume of vinegar sample (mL) 5.00 5.00 5.00 Final burette reading (mL) 50.37 49.39 49.84 Table 2. Titration data Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 2.29 1.41 1.95 Molarity of NaOH (M) 0.100 0.100 0.100 Volume of vinegar sample (mL) 5.00 5.00 5.00 Final burette reading (mL) 50.37 49.39 49.84 Expected color at end point Volume of NaOH used (mL) 48.08 47.98 47.89 Compute for the ff: a. Average moles of acetic acid (mol)? b. Average molarity of acetic acid (M)? c. Average molarity of acetic acid (M)?
Table 8.1 Hardness determination of water samples. Volume of NazHY 2 H20, mL Ca+, mg/L (mean SD) mL of Replicate Sample Initial Final Volume added 54 mL 15.1 15.1 1 54 mL 15.1 30.7 15.6 2 54 mL 30.7 45.3 14.6 3 Sample Calculations (show calculation for one replicate only) mg. (mL of titrantsample) (M of titrant)(40000) Ca2+ mL of sample mg. Ca2+ Biology Environmental Science