VII Answer the following questions concerning the determination of nitrogen (Kjeldahl method). (1) When 0.056g of protei

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Vii Answer The Following Questions Concerning The Determination Of Nitrogen Kjeldahl Method 1 When 0 056g Of Protei 1 (85.01 KiB) Viewed 13 times

VII Answer the following questions concerning the determination of nitrogen (Kjeldahl method). (1) When 0.056g of protein was heated with concentrated sulfuric acid, the protein was completely decomposed. Which of 1) to 5) is the nitrogen compound that is formed? 1) ammonium sulfate 2) aniline 3) pyridine 4) ammonium chloride 5) carbon dioxide (2) Ammonia, which is generated by alkalizing the nitrogen compound produced in the above question (1), is completely collected with 10.0 mL of a 0.050 mol L H₂SO4 solution. When an acid-base titration of the solution with 0.10 mol L¹ NaOH aqueous solution is performed, 3.6 mL of the NaOH aqueous solution is required. What weight percentage of nitrogen did the protein used in (1) contain? Answer the value to two significant figures. Use the following value necessary; the atomic weight of N is 14.