問題詳情
13. 凱氏(Kjeldahl)全氮定量法中，加入濃硫酸並且加熱使試樣分解時亦加入硫酸銅，此硫酸銅加入之主要目的為
(A)當指示劑用
(B)提高沸點
(C)當催化劑用
(D)當氧化劑用。
(A)當指示劑用
(B)提高沸點
(C)當催化劑用
(D)當氧化劑用。
參考答案
答案：C
難度：適中0.428571
統計：A(2),B(2),C(3),D(0),E(0)
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