酸鹼中和2
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鄭之偉 鄭之偉
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Science
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7th - 9th Grade
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10 questions
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1.
Multiple Choice
「某校的水管因長年未清理,所以已經堵塞、難以使用,因此在排水孔倒入一罐含氫氧化鈉的疏通劑,但倒入後沒過多久,水管就爆炸了。」試問水管爆炸的原因最可能為何?
水管疏通劑遇到汙垢等酸性物質放出大量的熱
水管的油汙產生的氣體過多
水管中的油汙因劇烈摩擦而爆炸
有駭客在水管中放置炸彈,偽裝成爆炸事件
2.
Multiple Choice
在室溫下,將下列哪一組物質混合後,會立即產生化學反應?
葡萄糖、食鹽水
沙拉油、汽油
鹽酸、氨水
酒精、水
3.
Multiple Choice
將氫氧化鈉水溶液(NaOH)與稀硫酸水溶液(H2SO4)混合,其反應式如下:2NaOH+H2SO4→Na2SO4+2H2O 有關此反應的過程,下列何者正確?
為放熱的化學變化
為吸熱的化學變化
為放熱的物理變化
為吸熱的物理變化
4.
Multiple Choice
下列哪一項是酸鹼中和的離子反應式?
H++OH- --> H2O
H2O -->H++OH-
2H2O --> 2H2+O2
2H2+O2 --> 2H2O
5.
Multiple Choice
下列何者不是酸鹼中和反應一定會發生的現象?
產生水
產生氯化鈉
放熱
生成鹽類
6.
Multiple Choice
將氫氧化鈣(Ca(OH)2)與鹽酸(HCl)反應,實際上有參與反應的是何者?
Ca2+及H+
Ca2+及OH-
H+及Cl-
H+及OH-
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