
10分鐘小測:第16章 指示劑和pH
Authored by Chemistry Aristo
Chemistry
9th - 12th Grade
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下表展示三種溶液X、Y和Z的pH。把數滴甲基橙加入每種溶液,下列哪個有關甲基橙在這些溶液所呈現的顏色的組合正確?
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某氫氯酸樣本的pH是0.5。該樣本中氫氯酸的濃度是多少 (以g dm⁻³為單位)?
(相對原子質量:H = 1.0、Cl = 35.5)
A. 0.00866
B. 0.316
C. 11.5
D. 18.3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪種物質的pH最高?
A. 乳酪
B. 茶
C. 0.05 M硝酸
D. 梳打粉溶液
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某學生分別對溶液M和溶液N進行兩個試驗。下表顯示這兩個試驗的結果。下列哪個有關這些溶液的pH的組合正確?
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些酸的pH是2.0?
(1) 0.020 M HNO₃(aq)
(2) 0.010 M HCl(aq)
(3) 0.0050 M H₂SO₄(aq)
A. 只有(1)和(2)
B. 只有(1)和(3)
C. 只有(2)和(3)
D. (1)、(2)和(3)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下表顯示百里酚藍 (一種酸鹼指示劑) 在不同pH範圍所呈現的顏色。下列哪個有關百里酚藍分別在0.5 M HCl(aq)和焗爐清潔劑所呈現的顏色的組合正確?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某酸樣本的pH是2.8。在50 cm³的該酸樣本加入蒸餾水,從而把樣本稀釋至200 cm³。稀釋後樣本的pH是多少?
A. 0.7
B. 3.4
C. 5.6
D. 6.8
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