10分鐘小測:第30章 氧化還原反應
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Chemistry Aristo
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪個過程不涉及氧化還原反應?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cr(CO)₆中Cr的氧化數是多少?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下反應。
3Br₂ + 6CO₃²⁻ + 3H₂O → 5Br⁻ + BrO₃⁻ + 6HCO₃⁻
下列哪項有關這反應的陳述正確?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1 mol的N₂H₄失去10 mol的電子,生成新化合物X。已知X中包含所有的氮,而氫的氧化數沒有改變。X中氮的氧化數是多少?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下反應。
2Ag + 2H₂SO₄ → Ag₂SO₄ + 2H₂O + SO₂
硫酸用作
(1) 氧化劑。
(2) 還原劑。
(3) 脫水劑。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
讓相同體積的1 M KMnO₄(aq)和1 M K₂Cr₂O₇(aq)分別於兩個燒杯內與過量的Fe²⁺(aq)在酸性介質反應,下列哪項或哪些陳述正確?
(1) 使用KMnO₄(aq)時,進行反應的Fe²⁺(aq)的量較大。
(2) 使用K₂Cr₂O₇(aq)時,進行反應的Fe²⁺(aq)的量較大。
(3) 兩個燒杯內均可觀察到顏色變化。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在鹼性介質中,高錳酸鉀溶液與碘化鉀溶液混合。高錳酸離子被還原為氧化錳(IV)。以下半方程式表示碘離子的氧化。
I⁻ + 6OH⁻ → IO₃⁻ + 3H₂O + 6e⁻
在鹼性介質中,一摩爾的KI可還原多少摩爾的KMnO₄?
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