反应2KMnO4＋16HCl===2MnCl2＋2KCl＋5Cl2↑＋8H2O中

搜题请搜索小程序“爱下问搜题”

问题填空题

反应2KMnO₄＋16HCl===2MnCl₂＋2KCl＋5Cl₂↑＋8H₂O中，

(1)氧化剂是________，氧化产物是________(填化学式)。

(2)若生成71 g Cl₂，则消耗的HCl是________mol，被氧化的HCl是________mol，转移的电子的物质的量是________。

答案

(1)KMnO₄；Cl₂

(3)3.2；2；2 mol

补全对话，情景问答

在空白处填入适当的句子补全对话。

A: Hi, Bill. You look unhappy. ___1___

B: I didn’t pass the English exam again.

A: ___2___But please don’t give up.

B: Well, maybe my way of learning English is not right.

A: ___3___

B: I learn it by doing my English homework early in the morning.

A: Oh, you should read books instead. It's easy to remember things early in the morning, don't you think

so?

B: Mm, perhaps you’re right. I'll have a try.

A: Do you take notes in English class?

B: Never. I only listen to what the teacher says. What do you think of the way?

A: ___4___ You should write down the important things the teacher tells you. After class, review it as

soon as possible．

B: OK. I'll do as you tell me.

A: Good luck to you!

B: ___5___

判断题

渠道两旁植树，在树种选择上要以适应当地自然条件的生长缓慢、枝干抗弯和枝叶防风的乔木为主。