阿摩線上測驗
61. Arrange the steps below in the order required to perform a Kjeldahl Nitrogen Analysis.
I Distillation of ammonia into standard hydrochloric acid.
II Neutralize ammonium to release ammonia.
III Digest the organic sample with boiling sulfuric acid to convert nitrogen to ammonium.
IV Titrate unreacted standard hydrochloric acid with sodium hydroxide.
(A) III, II, I, IV
(B) II, I, IV, III
(C) I, IV, III, II
(D) IV, III, II, I
(E) III, I, IV, II
答案：登入後查看
統計： A(6), B(0), C(0), D(1), E(0) #3421256
統計： A(6), B(0), C(0), D(1), E(0) #3421256
