
課題四 酸和鹽基
Quiz
•
Chemistry
•
7th - 9th Grade
•
Hard
Chemistry Aristo
Used 26+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
溶液X含有100 cm3的1.0 M CH3COOH(aq)。下列哪項有關溶液X的陳述正確?
A. 它不含OH–(aq)。
B. 完全中和溶液X所需的NaOH(aq)少於0.10 mol。
C. 它可與NH3(aq)反應並只生成鹽和水。
D. 它的pH值是0。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
300.0 cm3的0.50 mol dm–3 Na2SO4(aq)與100.0 cm3的1.0 mol dm–3 CaCl2(aq)混合時,所得的混合物中SO42–(aq)的濃度是多少?
A. 0.125 mol dm–3
B. 0.250 mol dm–3
C. 0.375 mol dm–3
D. 0.500 mol dm–3
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪項有關圖中四種溶液的陳述正確?
A. R和S的pH值相同。
B. 把Q與R混合時,HCl是過量的。
C. Q的pH值高於P的pH值。
D. 把P和R混合時,會生成一中性溶液。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把下列哪種物質與稀硫酸混合時,可製備硫酸鋇?
A. 鋇
B. 氧化鋇
C. 氯化鋇
D. 碳酸鋇
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
某硝酸樣本的pH值是3.0。在200.0 cm3的樣本中加入蒸餾水,使樣本稀釋至400.0 cm3,所得的溶液的pH值是多少?
A. 1.5
B. 2.7
C. 3.3
D. 6.0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把Y的水溶液與NaOH(aq)一起加熱時,會生成一鹼性氣體。把Y的水溶液加入酸化AgNO3(aq)時,並沒有可觀察變化。Y可能是下列哪種化合物?
A. KCl
B. Ca(NO3)2
C. NH4Cl
D. NH4NO3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把5.1 g的鄰苯二甲酸氫鉀 (C8H5O4K) 完全溶於蒸餾水中,製備成250.0 cm3溶液,當中25.0 cm3的鄰苯二甲酸氫鉀溶液與0.15 M氫氧化鈉溶液進行滴定。
完全反應所需的氫氧化鈉溶液的體積是多少?
(C8H5O4K的摩爾質量 = 204.1 g mol–1)
A. 16.7 cm3
B. 25.0 cm3
C. 33.4 cm3
D. 37.5 cm3
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