10分鐘小測:第31章 化學電池內的氧化還原反應

Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A. Co²⁺ + 2e⁻ ⇌ Co
B. H₂O₂ + 2H⁺ + 2e⁻ ⇌ 2H₂O
C. NO₃⁻ + H₂O + 2e⁻ ⇌ NO₂⁻ + 2OH⁻
D. Cr₂O₇²⁻ + 14H⁺ + 6e⁻ ⇌ 2Cr³⁺ + 7H₂O
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中顯示一個連接至伏特計的化學電池。已知鐵是較鎳強的還原劑。下列哪項陳述不正確?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中顯示一個標準氫電極。下列哪條方程式表示標準氫電極用作陰極時所發生的還原?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中顯示一個連接至伏特計的簡單化學電池。下列哪項有關這化學電池的陳述不正確?
A. 有無色氣泡在石墨電極A上釋出。
D. 石墨電極B是陰極。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下方程式表示在某化學電池所發生的總反應。
Mg(s) + Cu²⁺(aq) → Mg²⁺(aq) + Cu(s)
下列哪些陳述必定正確?
(1) 化學電池的陽極是由鎂製成。
(2) 化學電池的陰極是由銅製成。
(3) 鎂是還原劑。
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