問題詳情

3. Kjeldahl nitrogen analysis is one of the most widely used methods for the determination ofnitrogen in organic substances. Which reaction is not involving in this analysis:
(A) Kjeldahl digestion by H2SO4 and boiling


(B) Neutralization of


(C) NH3 gas reaction with excess standard HCl


(D) Distillation of NH3 into standard NaOH NH3 + HO- → NH4OH
(E) Titration of unreacted HCl H+ OH-→H2O

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增