
9上1-4電流的化學效應
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Medium
葉 進坤
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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
附圖為電解水的實驗裝置,若將開關切下開始實驗,則下列敘述何者正確?
可加入少量的氫氧化鈉來幫助導電
甲試管的氣體為氧氣
若甲試管收集到10毫升的氣體,則乙試管會收集到20毫升的氣體
此裝置可用來作為家用電源
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
水在常溫常壓下進行電解,反應式為「2H2O→2H2+O2」。關於水的電解,下列敘述何者正確?
2公克的水完全電解,可得2公克的氫氣
2毫升的水完全電解,可得2毫升的氫氣
電解產生的氫氣與氧氣質量比為2:1
電解產生氫氣與氧氣分子數比為2:1。
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
附圖為電解水的實驗裝置,若將開關切下開始實驗,則下列敘述何者正確?
甲試管為正極,產生氫氣
乙試管為正極,產生氧氣
甲試管為負極,產生氧氣
乙試管為負極,產生氫氣
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如附圖所示,如果小康想利用鉛蓄電池在鐵製的鑰匙上鍍上一層銅,請回答下列問題:
銅片應接到鉛蓄電池的哪一極?
正極
負極
都可以
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如附圖所示,如果小康想利用鉛蓄電池在鐵製的鑰匙上鍍上一層銅,請回答下列問題:
電鍍過程中,硫酸銅溶液的顏色有何改變?
藍色加深
藍色變淺
顏色不變
變為無色
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如附圖所示,如果小康想利用鉛蓄電池在鐵製的鑰匙上鍍上一層銅,請回答下列問題:
電鍍過程中,鐵製鑰匙上發生了什麼反應?
銅分解成銅離子
鐵分解成鐵離子
銅離子析出成銅
鐵離子析出成鐵
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如附圖所示,家宏以碳棒作為電極,電解1 M硫酸銅溶液,若使電流維持0.1安培,將其通電一段時間。請回答下列問題:
當電流接通後,下列敘述何者錯誤?
溶液中的Cu2+向碳棒甲移動
碳棒乙的質量不會改變
溶液中的SO42-向碳棒乙移動
硫酸銅溶液的顏色不變
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