120L Ex2 Identification of a solid acid report sheets - CHEM 120L - Spring 2022

Given the following information complete the last (blank) data table

Please answer the last questions. Question 1 and 2

00 mL of a diprotic acid primary standard solution was accurately prepared to a concentration of 0.1431 M.  Three samples of this primary standard solution were used as samples in a titration to standardize an aqueous solution of sodium hydroxide, NaOH, which would be used as a titrant. Using the following table of data for the titration of the primary standard acid with NaOH, calculate the average concentration of NaOH.   Trial # Volume of primary standard Initial titrant volume Final titrant volume 1 10.00 mL 8.21 mL 27.22 mL 2 10.00 mL 27.22 mL 46.23 mL 3 10.00 mL 30.28 mL 49.29 mL        0.1506 M      0.0753 M      0.0376 M      0.1431 M      0.0526 M

Acid-Base titration: Standardization of 0.1 M NAOH Trial 1 Mass KHP used, g 0.297 g Final reading Volume NaOH, mL 15.59 mL Initial reading Volume NaOH, mL 0.23 mL Volume NaOH consumed, mL 15.36 mL Moles KHP used Moles NaOH used Molarity of NaOH solution

0.2061 grams of an unknown organic acid was dissolved in about 50 mL of water in a 250 mL Erlenmeyer flask and titrated against 0.1000 M NaOH solution using bromothymol blue indicator. 15.56 mL of titrant was used to achieve end point. Calculate the Neutralization Equivalent. Write answer with two decimal places only. No units please.

Using the image attached for conclusion please make 1 paragraph - The cations present in cation mixture were... - The anions present in anions mixture were... - The cations present in unknown solution were... - The anions present in unknown solution were... Please please please answer as fast as possible please

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

*Record final buret volume and volume of NaOH in Lab Data *Calculate molarity of acetic acid in vinegar solution. Record concentration in Lab Data

Table 12.9 (data) Buffer Initial pH pH after adding HCI pH after adding NaOH 6 8 6 4 Solution A 5-6 8 Solution B8-9 10 Solution C7 9-10 Solution D 5 Boiled distilled water 5 9-10 4 9 Table 12.10 (report) Solutions able to buffer well against acid Solutions able to buffer well against base Solutions able to buffer well against acid or base Solutions with little or no buffering ability against acid or base

Table 2. Titration data   Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 1.19   2.26   2.39   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) 48.55   49.43   49.99   Expected color at end point             Volume of NaOH used (mL)           Average Volume of NaOH used in liters   Average moles of NaOH used (mol)   Average moles of acetic acid (mol)   Average molarity of acetic acid (M)     Average mass of acetic acid (g)   Average mass of vinegar (g) (assume the density of vinegar is 1.00 g/mL)   Average mass % of acetic acid in vinegar   Known mass % of acetic acid in vinegar is 5.45%   Percent Error

Using the two images attached please write one paragraph about the ANALYSIS Please please please answer as fast as possible

Pls help ASAP. Pls show all work and calculations.

Part II: Titration of Vinegar with Standaralzed Naun Report Table AV.4: Part 2 Calculations. Data and Calculations for three trials Part II: Titration of Vinegar with Standardized auη Report Table AV.4: Part 2 Calculations Data and Calculations for three trials Table view List view Trial 1 Trial 2 Trial 3 Volume of Vinegar Titrated (mL) 10.00 10.00 10.00 Initial Buret Reading (mL) 4.00 13.20 23.10 Final Buret Reading (mL) 13.20 23.10 34.001 9.20. 10.10 10.90 Volume NaOH used (mL) Moles Acetic Acid (mol) Mass Acetic Acid (g) Mass Percent Acetic Acid (%)

Hello, please answer the following attached Chemistry question correctly and fully based upon the attached table. Please "Explain your answer" as stated. Thank you.  Question:  "Based on the class average from Table 3-1, what is the optimal pH for beets? Explain your answer.".

What is the easiest process to get to the result?

Which of the following steps MUST be done prior to titration of an analyte? I. Prepare a standardized solution  II. Wash the burette with a standardized solution III. Fill the burette to the 50-mL mark IV. Prepare a contrast paper to determine burette volume and titration endpoint

Mass of Sample Volume of KMnO, solution used in titration Equivalents of permanganate used Equivalents of iron (II) in sample Moles of iron (II) in sample Grams of Iron in Sample % Iron in Sample Average % Iron in Unknown Instructor's Grade for Precision in Part B. Sample Calculations Part B: 0.58179 0.68719 28.19 ml 31,96m6 007662 00266 2 11 n

Please anwer the last questions. Question 1 and 2

What's the final volume of the buret (mL), volume of NaOH, and concentration of NaOHM)?

Table 12.5 (data)     Indicator Color in 0.05 M HCl Color in 0.05 M NaOH Methyl red     Bromcresol     Phenolphthalein     Methyl orange     Methyl violet       Table 12.6 (report)   Indicator showing very distinct color difference in acid and base   Indicator showing only slight color difference in acid and base

Please answer the following question with all the details and clarity. Show me all the steps and make sure you have the right sig figs and all that. It's very important. Since I ask you for such a thing, you can take as much time as you need. I will deff consider giving thumbs up if you help me, please. let's help each other in these unprecedented times, thanks.