
化學反應式平衡
Quiz
•
Science
•
7th - 9th Grade
•
Medium
鄭之偉 鄭之偉
Used 13+ times
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11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
銅置於濃硫酸中加熱反應的化學方程式如圖。經平衡後,係數為最簡單整數時,生成物的係數總和為下列何者?
3
4
5
6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
乾粉滅火器是利用高壓氮將乾粉(碳酸氫鈉)噴向火源,以受熱分解出的二氧化碳滅火,其反應式為xNaHCO3→yNa2CO3+zCO2+wH2O,平衡後下列何者正確?
x=y
x=y+z
x=y+z+w
y=z+w
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知氧化鈉中鈉與氧之原子數比為2:1,則鈉和氧反應產生氧化鈉的反應式,下列何者正確?
2Na+O --> Na2O
Na2+O2-->2NaO
4Na+O2-->2Na2O
Na+O2--NaO2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在化學反應式aN2+bH2→cNH3中,a、b、c各為最簡單整數的平衡係數。請問下列敘述何者正確?
a=3
b=2
c=1
a+b+c=6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知高爐煉鐵的反應式如下:Fe2O3+XCO→2Fe+YCO2,試問此反應式平衡後,X+Y=?
4
5
6
7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在製作麵食食品時,(NH4)2CO3可作為膨脹劑,因其在加熱分解時可產生氣體使麵團膨脹,其反應式為: (NH4)2CO3 → CO2+H2O+2X 反應生成的X為一種具有刺激性氣味的氣體,則X為下列何者?
N2
NO2
NH3
SO2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將反應式CH3OH+O2→CO2+H2O平衡後,如果要將4莫耳的甲醇(CH3OH)與氧完全作用燃燒,則需供應多少莫耳的氧氣?
1
3
4
6
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