下列反应的离子方程式正确的是 ①铁和稀硫酸反应：2Fe+6H+═2Fe3++3H2↑②往FeCl3溶液中加入Fe粉：2Fe3++Fe═3Fe2+③氧化亚铁溶于稀硝酸：FeO+2H+═Fe2++H2O

题干

下列反应的离子方程式正确的是（）

①铁和稀硫酸反应：2Fe+6H⁺═2Fe³⁺+3H₂↑

②往FeCl₃溶液中加入Fe粉：2Fe³⁺+Fe═3Fe²⁺

③氧化亚铁溶于稀硝酸：FeO+2H⁺═Fe²⁺+H₂O

④氯化铁水解：Fe³⁺+3H₂O═Fe（OH）₃↓+3H⁺

⑤氯化亚铁溶液中加入氯水：Fe²⁺+C1₂═Fe³⁺+2C1^﹣

⑥碳酸氢钠水解：HCO₃^﹣+H₂O═H₃O⁺+CO₃²^﹣

⑦通入过量二氧化硫于碳酸氢钠溶液：SO₂+HCO₃^﹣═CO₂+HSO₃^﹣

⑧氯气通入氢氧化钠溶液：2OH^﹣+C1₂═C1^﹣+C1O^﹣+H₂O．

A：①③⑤

B：②④⑥

C：②④⑤

D：②⑦⑧

上一题下一题 0.0难度选择题更新时间:2018-05-25 10:02:18

D

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①包含所选活动日的全部信息, 并给出你认为恰当的理由。

②不得出现真实姓名, 学校等。

③字数80。

School Day
	A.M.	Activities	P.M.	Activities
Mon.	8:00-10:00	opening of our new library visit the new library	2:30-4:00	A stage drama about “Alice in Wonderland”
Tues.	10:00-11:00	A report on “Family Education”	2：00-4:00	Parent-child games
Wed.	11:00-11:40	A class meeting about DIY	1:00-2:30	visit the whole school
Thurs.	8:00- 9:30	Public classes of Chinese and math	2:30-4:00	A basketball game between two schools
Fri.	8:00- 9:30	Public classes of English and science	2:30-3:30	An English speech competition about “ My future life”

Dear parents,

I would like to invite you to our School day next week.

……Please reply in writing to this invitation my Friday, May 28^th.

Larry Smith

Headmaster