根据化学方程式书写原则判断，下列错误的是_刷题宝

题干

根据化学方程式书写原则判断，下列错误的是（）

A：Cu+2HCl═CuCl₂+H₂

B：Na₂CO₃+CaCl₂═CaCO₃↓+2NaCl

C：2Fe₂O₃+C 4Fe+3CO₂↑

D：CO₂+Ca（OH）₂═CaCO₃↓+H₂O

上一题下一题 0.0难度选择题更新时间:2018-01-11 09:23:53

答案(点此获取答案解析）

A

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同类题2

下列各组中：

①金刚石②¹²C③液氯④¹⁴C⑤CH₃CH₂CH₂CH₃⑥氯水⑦ ⑧ ⑨C₆₀

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下列事例中，利用电流的化学效应的是 ( )

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根据短文理解，选择正确答案。
Bob works in an office. Every morning he has breakfast at seven thirty, reads his newspaper, drinks a cup of coffee and then goes to work. One morning, he is still at the table reading his newspaper at: 8 0'clock. He asks his wife for another cup of coffee. His wife asks him, “Aren't you going to the office today?” “The office?” He jumps up from his chair, "I think I am in the office."

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