10分鐘小測:第40章 平衡常數
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知反應I在某温度下的平衡常數的數字是4.0,反應II在相同温度下的平衡常數的數字是多少?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知以下反應在440°C時的平衡常數是0.25。
2HI(g) ⇌ H₂(g) + I₂(g)
圖中的反應在相同温度下的平衡常數是多少?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下可逆反應:
2SO₂(g) + O₂(g) ⇌ 2SO₃(g)
在一實驗中,把0.060 mol dm⁻³的SO₂(g)和0.050 mol dm⁻³的O₂(g)注入一個具固定體積且維持在某温度的容器內。達致平衡時,體系含有0.040 mol dm⁻³的SO₃(g),O₂(g)的平衡濃度是多少?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖中的方程式所示,亞硝酰氯可進行可逆的離解生成一氧化氮和氯。在一實驗中,把1.50 g的亞硝酰氯樣本在1.00 dm³的容器中加熱至350°C,發現亞硝酰氯的離解百分比是57.2%。這反應在該温度下的平衡常數是多少?
(相對原子質量:N = 14.0、O = 16.0、Cl = 35.5)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮圖中的可逆反應。在這氣態體系中,當N₂(g)和O₂(g)的起始濃度均是0.040 mol dm⁻³,NO(g)的平衡濃度是多少?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮在1.00 dm³容器中於200°C發生的下列反應:
X(g) + Y(g) ⇌ 2Z(g)
已知X(g)、Y(g)和Z(g)的平衡濃度分別是0.200 mol dm⁻³、3.00 mol dm⁻³和0.500 mol dm⁻³,在相同的温度下,若要把Z(g)的濃度進一步增至0.700 mol dm⁻³,需額外加入多少摩爾的X(g)?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下三個平衡的體系,每個體系都在某條件下發生。
體系I:PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)
體系II:2HI(g) ⇌ H₂(g) + I₂(g)
體系III:N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
假設在上述的各體系中,每一個物種的平衡濃度都是0.01 M,以下哪項把這些反應的完成程度按正確的次序排列?
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