The substance to be analyzed – is white, highly soluble in water salt. Addition of diluted sulfuric acid, or hydrochloric acid, or NaOH, or barium chloride, or silver nitrate doesn't produce any precipitates. Interaction with Nessler's reagent leads to formation of reddish-brown precipitate. Addition of antipyrin in acid medium changes color to red. What kind of substance is this? NH,NO; KNO; NaCl NH,CH;COO

The substance to be analyzed – is white, highly soluble in water salt. Addition of diluted sulfuric acid, or hydrochloric acid, or NaOH, or barium chloride, or silver nitrate doesn't produce any precipitates. Interaction with Nessler's reagent leads to formation of reddish-brown precipitate. Addition of antipyrin in acid medium changes color to red. What kind of substance is this? NH,NO; KNO; NaCl NH,CH;COO

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter4: Recrystallization

Section: Chapter Questions

Problem 1Q

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Standard solution : 0.201 grams of acetylsalicylic acid was combined with 10 mL of 0.5 M NaOH, then transfered to a 100 mL flask and filled the rest of the way with water Then 0.500 mLs of the standard solution was transfered to a 10.00 mL flask and diluted to the 10 mL mark with 0.02 M of buffered iron chloride. This step was repeated using 0.400, 0.300, 0.200, 0.100 mLs of the standard solution Questions: A.) determine the concentration of the acetylsalicylic acid in the 100.00 mL volumetric flask containing the solution from which the standards were made. B.)determine the concentration of the acetylsalicylic acid in each of the 10.00 mL calibration solutions. I only need the work for 0.400 mLs C.)Make a scatter plot (on the computer again) of absorbance versus concentration for the calibration samples. On the plot, add a linear trendline, and display the equation and the R2 value on the chart. Take your time to label the axes
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Standard solution : 0.201 grams of acetylsalicylic acid was combined with 10 mL of 0.5 M NaOH, then transfered to a 100 mL flask and filled the rest of the way with water Then 0.500 mLs of the standard solution was transfered to a 10.00 mL flask and diluted to the 10 mL mark with 0.02 M of buffered iron chloride. Number of moles of NaOH = 0.005 moles Since the reaction between acetylsalicylic acid and NaOH is a 1:1 reaction, the number of moles of acetylsalicylic acid used in the reaction is also 0.005 moles. the concentration from analysis question 5: acetylsalicylic acid in the 100.00 mL volumetric flask is 0.050 M. From your plot, what is the value of εb? From the Beer- Lambert law For the aspirin sample, calculate the concentration of acetylsalicylic acid present using the value of εb that you found The concentration from analysis question 5 represents the concentration in the 10.00 mL sample that was prepared in the volumetric flask using an aliquot of the solution in the…
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1. The substance to be analyzed – is white, highly soluble in water salt. Addition of diluted sulfuric acid, or hydrochloric acid, or NaOH, or barium chloride, or silver nitrate doesn`t produce any precipitates. Interaction with Nessler's reagent leads to formation of reddish-brown precipitate. Addition of antipyrin in acid medium changes color to red. What kind of substance is this? Explain you answer, provide chemical equations
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