Determination of copper in brass from iodometric titration. Do the calculations. The volume of Sodium thiosulphate that we got after the titration for three trials was 28.02ml, 30.755ml, 29.635ml.The weight of the brass samples are 0.2028g, 0.2252g, 0.2104g. Please do all the calculations, also make a table and do the error analysis as well.
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- A mixture has thre components. The percentage of sand was determined to be 26.04%, the percentage of benzoic acid was determied to be 25.92%, and the percentage of salt was determined to be 35.97%. Calculate the total precent recovery.A student performed a titration to determine the exact concentration of NaOH(aq). The titration was performed against a standard 0.1000 M HCl(aq) solution. Phenolphthalein indicator was used. The following end-point volumes were recorded by the student in units mL: Trial Number Volume 1 25.06 2 25.15 3 25.02 4 25.17 5 25.07 Calculate the 95% confidence limit. Assume that there is no outlier. Provide your answer to the correct number of decimal places, without units, and without the ± sign. Use the T-table shown below.A 0.1093-g sample of impure Na2CO3( Molecular weight 106) was analyzed by the Volhard method. After adding 50.00 mL of 0.06911 M AGN03 (Molecular weight 169.87), the sample was back titrated with 0.05781 M KSCN, requiring 27.36 mL to reach the end point. Report the purity of the Na2CO3 sample.
- 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 Mneed help with this chemistryReport sheet for Titration of vinegar Part I: Standardization of the NaOH solution with KHP Trial 1 Trial 2 Trial 3 Mass of Erlenmeyer flask + KHP (g) 78.34 78.27 78.01 Mass of empty flask (g) 77.12 77.12 77.12 Mass of KHP (g) 1.22 1.15 0.89 Final buret reading (mL) 31.35 30.53 27.71 Initial buret reading (mL) 16.35 15.78 14.20 Vol NaOH solution delivered (mL)…
- Answer provided: 0.09125N KSCN/0.09125M KSCN Please show your complete solution and write your answer clearly and readable. Thank you.Shana, a student in the Analytical Chemistry class, performed a Redox Titration to determine the content of hypochlorite ions (% w/w) in an unknown solution. First, Shana prepared a primary standard solution of KIO3 by dissolving 0.4791 g dry KIO3 in 250.00 mL DI water. Next, using the procedure in your lab manual, Shana used 50.00 mL of this primary standard solution to standardize the Na2S2O3 titrant, and 26.25 mL of titrant was consumed. Next, Shana prepared the unknown solution by diluting 12.8624 g of the solution in 250.00 mL of DI water. A 50.00 mL portion of this dilute unknown solution was titrated using the procedure in your lab manual, and 19.25 mL of Na2S2O3 solution was consumed. Answer the following questions about this titration. Recall the stoichiometry of the NET chemical equation for this reaction. Note: use appropriate significant figures in your answer! A. Calculate the concentration (M) of Na2S2O3 titrant. B. Determine the amount (g) of hypochlorite ion in 50.00 mL…Pls help ASAP. Pls show all work and calculations.
- Write the gravimetric factor proportionally for the compounds given below.I need help calculating the Molarity of the solution in the first picture please!!!A 5.00 mL aqueous sample containing hydrogen peroxide was diluted to 25 mL and analyzed by titration with permanganate: 2MnO4- + 5H2O2 + 6H+ → 5O2 + 2Mn2+ + 8H2O The sample required 42.8 mL of 0.0175 M permanganate to reach the end point. What is the concentration of hydrogen peroxide in the original sample?