25分鐘測驗:課題九 反應速率
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在常温常壓下,把1.20 g的鎂帶加進過量的稀氫氯酸。在5分鐘後,泡騰現象便停止。在這反應中,氫的生成速率是多少?
Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)
(相對原子質量:Mg = 24.3;在常温常壓下,氣體的摩爾體積 = 24 dm³ mol⁻¹)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下反應:
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
在學校實驗室中,下列哪個或哪些方法不能用來跟隨這反應的進度?
(1) 量度反應混合物的質量變化
(2) 量度氣態生成物的體積變化
(3) 量度反應體系的壓強變化
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
左面是在某些條件下,在具固定體積的密閉容器內進行的一個反應的濃度對時間坐標圖。下列哪個方程式能正確表示這反應?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
進行兩次實驗,以研習影響石灰石與氫氯酸的反應速率的因素。左面坐標圖顯示每次實驗的結果。這兩次實驗只有一項條件不同,而且均使用了過量氫氯酸。哪個有關這兩次實驗的條件的組合正確?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1 g的CaCO₃(s)與20.0 cm³的2.0 M HCl(aq)反應時,所生成CO₂(g)的最大體積(在常温常壓下量度)是多少?
CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + CO₂(g) + H₂O(l)
(相對原子質量:C = 12.0、O = 16.0、Ca = 40.1;在常温常壓下,氣體的摩爾體積 = 24 dm³ mol⁻¹)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在某温度下進行一實驗,以研習硫代硫酸鈉溶液與稀氫氯酸反應的動力學。
Na₂S₂O₃(aq) + 2HCl(aq) → 2NaCl(aq) + S(s) + SO₂(g) + H₂O(l)
如表格所示的四個燒杯,各盛有把不同濃度和體積的Na₂S₂O₃(aq)和水混合而得的Na₂S₂O₃(aq),對它們分別加進10 cm³的2.0 M HCl(aq)。藉量度把交叉「遮蔽」所需的時間,能測定這反應的平均速率。已知這反應的速率取決於Na₂S₂O₃(aq)和HCl(aq)的濃度。在哪燒杯內,反應能以最短時間把交叉「遮蔽」?
A. P
B. Q
C. R
D. S
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
進行兩次實驗,以探究碳酸鈣與稀氫氯酸反應的動力學。所用的化學品如表格所示,而其他實驗條件相同。在每次實驗,反應都是在具固定體積的密閉瓶內發生,並於固定時距量度反應體系的壓強。哪幅坐標圖最能代表這兩次實驗的結果?
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