下列指定反应的离子方程式正确的是_刷题宝

题干

下列指定反应的离子方程式正确的是（）

A：氯气溶于水：Cl₂+H₂O=2H⁺+Cl^﹣+ClO^﹣

B：Na₂CO₃溶液中CO $_{3}^{2 -}$ 的水解：CO $_{3}^{2 -}$ +H₂O=HCO $_{3}^{-}$ +OH^﹣

C：酸性溶液中KIO₃与KI反应生成I₂：IO₃^﹣+I^﹣+6H⁺=I₂+3H₂O

D：NaHCO₃溶液中加足量Ba（OH）₂溶液：HCO $_{3}^{-}$ +Ba²⁺+OH^﹣=BaCO₃↓+H₂O

上一题下一题 0.0难度选择题更新时间:2019-01-22 11:09:08

答案(点此获取答案解析）

D

同类题1

根据句意及首字母提示补全对话

A: Hi, Lingling. Could you help me w____ my homework?

B: What is that?

A: Our teacher a____us to write a composition about a famous people. But I have no idea.

B: W____don’t you introduce Confucius?

A: That s____like a good idea. What do you k____about Confucius?

B: Well, Confucius was a great t____and a very wise man. He was a teacher, and he taught lots of students in different countries. And his t____were mainly written in Lunyu. His works are r____by millions of people, and we’re still i____by him nowadays.

A: What are his thoughts?

B: Do you know that parents and grandparents are highly r____ in China?

A: Yes, I do.

B: That’s one of his thoughts.

同类题2

世界上黑种人的故乡主要分布在非洲的( )

同类题3

某种生物孢子的直径为0.000 63m，用科学记数法表示为（）

同类题4

如图，△ACD和△ABC相似需具备的条件是（）

同类题5

若方程x²-6x+m=0有两个同号不相等的实数根，则m的取值范围是（　　）

小学学科试题库

初中学科试题库

高中学科试题库