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38.小華將鋅片放入硫酸銅水溶液中,觀察到有反應發生,則關於此反應的敘述,下列何者正確? (A)溶液中有氧氣不斷冒出(B)鋅片上有紅色的銅析出(C)溶液的顏色由無色漸漸變成藍色(D)反應會生成具刺激性
問題詳情
38.小華將鋅片放入硫酸銅水溶液中,觀察到有反應發生,則關於此反應的敘述,下列何者正確?
(A)溶液中有氧氣不斷冒出
(B)鋅片上有紅色的銅析出
(C)溶液的顏色由無色漸漸變成藍色
(D)反應會生成具刺激性臭味的SO2氣體。
參考答案
答案:B
難度:非常困難0
統計:A(1),B(0),C(1),D(0),E(0)
用户評論
【用戶】
紀小妹
【年級】大三上
【評論內容】鋅片加入硫酸銅後,因為鋅活性比銅大鋅會氧化、銅會還原
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31.銅置於濃硫酸中加熱反應的化學方程式如下: ,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?(A)3 (B)4 (C)5 (D)6。
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