25分鐘測驗:課題八 化學反應與能量
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
哪個有關化學反應及它的焓變的組合不正確?
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知圖中化學鍵的鍵焓數據。以下反應的焓變是多少?
H₂(g) + F₂(g) → 2HF(g)
A. –693 kJ mol⁻¹
B. +693 kJ mol⁻¹
C. –1309 kJ mol⁻¹
D. +1309 kJ mol⁻¹
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知圖中各熱化學方程式。CaCO₃(s)的標準生成焓變是多少?
A. +851 kJ mol⁻¹
B. –851 kJ mol⁻¹
C. +1208 kJ mol⁻¹
D. –1208 kJ mol⁻¹
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知圖中各數據。以下反應的標準焓變是多少?
2NaHCO₃(s) → Na₂CO₃(s) + H₂O(l) + CO₂(g)
A. +27 kJ mol⁻¹
B. –27 kJ mol⁻¹
C. +889 kJ mol⁻¹
D. –889 kJ mol⁻¹
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一量熱法的實驗中,若把2.30 g的乙醇(CH₃CH₂OH)在酒精燈中燃燒,在金屬容器中的300 g水的温度便升高了35°C。在該實驗條件下,乙醇的燃燒焓變是多少?
(水的比熱容 = 4.2 J g⁻¹ K⁻¹;相對原子質量:H = 1.0、C = 12.0、O = 16.0)
A. –192 kJ mol⁻¹
B. –383 kJ mol⁻¹
C. –882 kJ mol⁻¹
D. –959 kJ mol⁻¹
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知:
Br₂(g) + 3F₂(g) → 2BrF₃(g) ΔH = –511 kJ mol⁻¹
Br₂(g) + 3F₂(g) → 2BrF₃(I) ΔH = –602 kJ mol⁻¹
使1摩爾的液態BrF₃沸騰的焓變是多少?
A. –45.5 kJ mol⁻¹
B. +45.5 kJ mol⁻¹
C. –91.0 kJ mol⁻¹
D. +91.0 kJ mol⁻¹
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