The Kjeldahl method was used to determine the nitrogen content of a soil sample. 25 g soil sample was digested and the liberated ammonia distilled into 10 mL of 0.05 M HCl, which was used in the subsequent back titration. The unreacted HCl required 13.25 ml of 0.025 M NaOH for complete titration. Calculate the Total Kjeldahl Nitrogen

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Chapter4: Reactions In Aqueous Solution
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The Kjeldahl method was used to determine the nitrogen content of a soil sample. 25 g soil sample was digested and the liberated ammonia distilled into 10 mL of 0.05 M HCl, which was used in the subsequent back titration. The unreacted HCl required 13.25 ml of 0.025 M NaOH for complete titration. Calculate the Total Kjeldahl Nitrogen (TKN) in mgkg¹¹ N.
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