10分鐘小測:第17章 酸和鹼的強度

Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
Used 2+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
鹼的強度取決於
A. 每個鹼分子中氫原子的數目。
B. 它溶於水時每個鹼分子所生成氫氧離子的數目。
C. 它在水中電離或離解的程度。
D. 它與酸反應時生成鹽的速率
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些酸是弱酸?
(1) 檸檬酸
(2) 碳酸
(3) 亞硫酸
A. 只有(1)和(2)
B. 只有(1)和(3)
C. 只有(2)和(3)
D. (1)、(2)和(3)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下四種溶液:
(1):0.1 M HCl(aq)
(2):1.0 M HCl(aq)
(3):0.1 M CH₃COOH(aq)
(4):1.0 M H₂SO₄(aq)
下列哪項顯示溶液pH遞增的次序?
A. (1), (2), (3), (4)
B. (2), (4), (1), (3)
C. (3), (1), (2), (4)
D. (4), (2), (1), (3)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若把30 cm³的0.10 M硫酸與40 cm³的0.15 M氨水混合,下列哪項正確顯示所得溶液中[H⁺(aq)]和[OH⁻(aq)]的關係?
A. [H⁺(aq)] < [OH⁻(aq)]
B. [H⁺(aq)] > [OH⁻(aq)]
C. [H⁺(aq)] = [OH⁻(aq)]
D. [H⁺(aq)] = 2[OH⁻(aq)]
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些會使0.1 M氨水的pH上升?
(1) 加入0.1 M氫氧化鈉溶液
(2) 加入固態氯化鈉
(3) 加入小量水
A. 只有(1)
B. 只有(2)
C. 只有(1)和(3)
D. 只有(2)和(3)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
溶液X和溶液Y的pH分別是2和1。若把50 cm³的溶液X和50 cm³的溶液Y混合,所得溶液的pH是多少?
A. 0.74
B. 1.3
C. 1.5
D. 1.8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知某酸X樣本和酸Y樣本的pH均是3.5。下列哪項或哪些陳述必定正確?
(1) 兩個樣本的H⁺(aq)離子的濃度相同。
(2) X和Y的鹽基度相同。
(3) X和Y的強度相同。
A. 只有(1)
B. 只有(2)
C. 只有(1)和(3)
D. 只有(2)和(3)
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