10分鐘小測:第64章 儀器分析方法
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
指示:第1和2題是有關為測定在某物質的水溶液中有色化學物種X的濃度,而進行的一個比色法實驗。
對X進行比色法的研習時所用的校準曲線如圖中所示。若該物質的一個溶液樣本的吸光度是0.85,該溶液樣本中X的濃度是多少?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
指示:第1和2題是有關為測定在某物質的水溶液中有色化學物種X的濃度,而進行的一個比色法實驗。
假設在為第1題提到的溶液樣本量度吸光度之前,已用去離子水將它稀釋100倍,那麼在該物質的1.0 cm³未稀釋溶液樣本中,X的質量是多少(以g為單位)?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一實驗中,某學生嘗試以比色法測定一個硫酸銅(II) 溶液樣本中銅(II) 離子的濃度。老師提醒他/她不應使用裝有藍色濾光片的比色計來量度各溶液的吸光度。下列哪項陳述正確解釋為甚麼?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖中所示,若要分辨X和Y這兩個碳化合物,可使用以下哪一特徵紅外輻射波數域?
A. 1610至1680 cm⁻¹
B. 1680至1800 cm⁻¹
C. 2500至3300 cm⁻¹
D. 3230至3670 cm⁻¹
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某碳化合物的紅外光譜如圖中所示。下列哪化合物可得到這光譜?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲基丁烷的質譜如圖中所示。對甲基丁烷質譜的詮釋,哪項是不正確的?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Z是碳化合物,它的分子式是C₃H₆O。Z的質譜如圖中所示。已知Z在2,4-二硝基苯肼試驗中得到陽性結果,下列哪化合物可能是Z?
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