
B4C4練習用
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
chungtsen chen
Used 2+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
藥品使用時常配成溶液以利反應,是考慮下列哪一項影響化學反應速率的因素?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
當大量的煤灰瀰漫在乾燥空氣的場所中,常會有爆炸的危險性,其理由與下列何種因素有關?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
欲研究硫代硫酸鈉與鹽酸的反應速率,觀察下列何項較為方便?
HCl 的消耗量
SO2 的生成量
S 的生成量
NaCl 的生成量
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在飽和溶液中,固體的溶解速率為何?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在 2CrO4 2-(黃色)+2H+ → Cr2O7 2-(橘紅色)+H2O 的平衡反應中,下列敘述何者正確?
達平衡後,[ CrO4 2-]=[ Cr2O7 2-]
達平衡後,正反應速率小於逆反應速率
達平衡後,溶液中[ CrO4 2-]:[ Cr2O7 2-]=2:1
達平衡後,顏色不再變化
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲試管裝入 0.5 M 的鹽酸 15 毫升及水 5 毫升,乙試管裝入 1 M 的鹽酸 2 毫升及水 18 毫升,丙試管裝入 2 M 的鹽酸 10 毫升及水 10 毫升。各試管分別混合均勻後,分別加入大小約略相等的碳酸鈣塊,則冒出氣體的速率為何?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將稀鹽酸與大理石放入一密閉的瓶中,經一段時間後,瓶中大理石的量不再減少(仍有殘餘),而稀鹽酸的量也不再減少(仍有剩餘),在這種情形之下,下列敘述何者正確?
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