25分鐘測驗:課題七 氧化還原反應、化學電池和電解
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
Used 1+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
參看圖中裝置。這電池在運作了一段時間後,發現它的電壓迅速下降。原因是
A. 有很多氣泡在銅電極的表面上生成。
B. 硫酸銅(II) 溶液的濃度減少了。
C. 有一層銅在鎂電極的表面上生成。
D. 有一層氧化物在鎂電極的表面上生成。
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
考慮以下半方程式:
SO₄²⁻(aq) + xH⁺(aq) + ye⁻ → HS⁻(aq) + zH₂O(l)
下列哪個有關x、y和z的組合正確?
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮圖中裝置。下列哪項或哪些有關這裝置的陳述正確?
(1) 鋅離子經多孔裝置流進硫酸銅(II) 溶液。
(2) 在銅容器上有氣泡生成。
(3) 電流經外電路從鋅片流向銅容器。
A. 只有(1)
B. 只有(2)
C. 只有(1)和(3)
D. 只有(2)和(3)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把二氧化硫水溶液分別與以下溶液混和時,哪些溶液會產生顏色變化?
(1) Br₂(aq)
(2) Fe(NO₃)₃(aq)
(3) K₂Cr₂O₇(aq)/H⁺(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
下列哪項有關1.5 V鋅碳電池的陳述正確?
A. 它呈鈕形。
B. 它能在廣闊的温度範圍內運作。
C. 它的負電極是鋅。
D. 它的電解質是氫氧化鉀。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖中所示,把氣體M通入溶液N中。下列有關M和N的組合,哪個會產生可觀察變化?
A
B
C
D
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