
25分鐘測驗:課題四 酸和鹽基
Authored by Chemistry Aristo
Chemistry
9th - 12th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪項有關100 cm³的1.0 M CH₃COOH(aq)的陳述正確?
A. 它不含OH⁻(aq)。
B. 它需要少於0.10 mol的NaOH(aq)來完全中和。
C. 它與NH₃(aq)反應,只生成鹽。
D. 它的pH是0。
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪個酸含最大量的H⁺(aq)離子?
A. 4 cm³的0.7 M硫酸
B. 10 cm³的0.5 M硝酸
C. 20 cm³的0.3 M氫氯酸
D. 40 cm³的0.2 M乙酸
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
用0.2 M硝酸滴定25.0 cm³的0.1 M氫氧化鈉溶液。在滴定前,下列哪個或哪些儀器應先用蒸餾水沖洗,然後再用0.2 M硝酸沖洗?
(1) 移液管
(2) 滴定管
(3) 錐形瓶
A. 只有(1)
B. 只有(2)
C. 只有(1)和(3)
D. 只有(2)和(3)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
考慮圖中四種溶液。下列哪項有關這些溶液的陳述正確?
A. R和S的pH相同。
B. 把Q與R混合時,HCl(aq)是過量的。
C. Q的pH較P的高。
D. 把P與R混合時,生成一中性溶液。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某酸樣本的pH是3.0。在200 cm³的該樣本加入蒸餾水,從而把樣本稀釋至400 cm³。稀釋後樣本的pH是多少?
A. 1.5
B. 2.7
C. 3.3
D. 6.0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中顯示乙酸與氫氧化鈉溶液的滴定所用的裝置。哪個有關指示劑X和它在終點的顏色變化的組合正確?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把下列哪項加入1 M氫氯酸時不會改變氫氯酸的pH?
A. 蒸餾水
B. 1 M硫酸
C. 1 M硝酸
D. 1 M乙酸
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