
考考你:第39章 動態平衡
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪反應或過程是不可逆的?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列各反應或過程,哪個或哪些是可逆的?
(1) 鐵的銹蝕
(2) 甲酸在水中的電離
(3) 丙烯的加成聚合
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些有關可逆反應的陳述是正確的?
(1) 它們一旦開始了,便永不停止。
(2) 它們可循正向和逆向兩個方向進行。
(3) 限量反應物最終會被完全耗掉。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮圖中的可逆反應。把NO₂(g)加入試管中,並且緊緊塞好試管。下列哪項陳述最能描述這氣態混合物的預期觀察隨時間的變化?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下可逆反應:
H₂(g) + I₂(g) ⇌ 2HI(g)
這反應處於動態平衡時,下列哪些陳述正確?
(1) 這反應是在密封的容器中建立平衡。
(2) 這反應混合物的顏色深度維持不變。
(3) 在這反應混合物中,H₂(g)、I₂(g)和HI(g)的濃度相等。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下可逆過程:
H₂CO₃(aq) ⇌ 2H⁺(aq) + CO₃²⁻(aq)
這反應處於動態平衡時,下列哪個或哪些陳述正確?
(1) H₂CO₃(aq)的電離速率是零。
(2) 溶液的pH維持不變。
(3) 溶液中H₂CO₃(aq)的濃度維持不變。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下化學反應:
CO(g) + 2H₂(g) ⇌ CH₃OH(g)
這反應處於動態平衡時,哪些陳述正確?
(1) 氣態混合物的壓強維持不變。
(2) 在這反應混合物中,CO(g)、H₂(g)和CH₃OH(g)的濃度維持不變。
(3) 當一摩爾的CO分子與兩摩爾的H₂分子結合,就有一摩爾的CH₃OH分子分解。
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