理化第四冊第四章
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
chungtsen chen
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大理石與鹽酸反應中,何者對其反應速率沒有影響?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
舜元在煮火鍋時發現媽媽買的火鍋肉片通常都是薄片狀,媽媽說:「這樣比較容易煮熟。」請問這原理與下列何者較相近?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
室溫時,於下列各溶液中分別加入0.1 g且形狀接近的碳酸鈣,則最初產生氣體的速率何者最快?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若要了解反應物濃度與反應速率的關係,可利用不同濃度的硫代硫酸鈉與鹽酸混合,利用產生之黃色沉澱物將瓶底「+」號完全遮住所需的時間來判斷反應速率的快慢,若以硫代硫酸鈉的剩餘莫耳為縱座標,時間為橫座標,其可能圖形為何?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(甲) 20 ℃時,20%的H2O2水溶液150克;(乙) 40 ℃時,30%的H2O2水溶液100克+3 g MnO2;(丙) 60 ℃時,30%的H2O2水溶液100克+3 g MnO2。以上是阿翔做雙氧水製氧的實驗時,所採用的不同的實驗條件,試問下列敘述何者正確?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在「Br2+H2O H++Br-+HBrO」之平衡反應中,下列何種狀況,可改變平衡使反應向右移動?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
當化學反應2 K2CrO4+2 H2SO4 K2Cr2O7+H2O+K2SO4處於平衡時,下列敘述何者一定正確?
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