Data and Minor Calculations Part I standardization of the sodium hydroxide Table 1 : Titration of 25.00 mL of standard sulfuric acid solution with sodium hydroxide Trial Initial burc reading (ml) 0.52 Final buret reading (m²) Volume of sodium hydroxide (ML) Part 2. Analysir of unknown Table 2 Titration with Initial buret reading (ml) Final buret reading (ml) 47.83 Volume of sodium hydroxide (ml) 37.54 37.55 Tared mass of unknown sample : 1.5289 #137256 Concentration of standard sulfuric acid solution : 0.04953 4. Calculate the average volume of sodium hydroxide used for the back titration. 5. Calculate the moles of sodium hydroxide used for the back titration. 6. Calculate the moles of sulfuric acid that remained in the solution (the excess) after reaction with the carbonate. 24-92 24.40 Carbonate of impure sodium carbonate Tri al sodium hydroxide solution 10.51 38.05 Solution 2 2 25 18.35 44.78 24.43 10.28

Data and Minor Calculations Part I standardization of the sodium hydroxide Table 1 : Titration of 25.00 mL of standard sulfuric acid solution with sodium hydroxide Trial Initial burc reading (ml) 0.52 Final buret reading (m²) Volume of sodium hydroxide (ML) Part 2. Analysir of unknown Table 2 Titration with Initial buret reading (ml) Final buret reading (ml) 47.83 Volume of sodium hydroxide (ml) 37.54 37.55 Tared mass of unknown sample : 1.5289 #137256 Concentration of standard sulfuric acid solution : 0.04953 4. Calculate the average volume of sodium hydroxide used for the back titration. 5. Calculate the moles of sodium hydroxide used for the back titration. 6. Calculate the moles of sulfuric acid that remained in the solution (the excess) after reaction with the carbonate. 24-92 24.40 Carbonate of impure sodium carbonate Tri al sodium hydroxide solution 10.51 38.05 Solution 2 2 25 18.35 44.78 24.43 10.28

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.17QAP

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