Cho 28,2 gam hỗn hợp X gồm hai ancol đơn chức tác dụng hết với 11,5 gam Na, sau phản ứng thu 39,3 gam chất rắn. Nếu đun 28,2 gam X với H2SO4 đặc ở 1400C, thì thu được tối đa bao nhiêu gam ete ?
A. 19,2 gam
B. 23,7 gam
C. 24,6 gam
D. 21,0 gam
Học tại trường
Chưa có thông tin
Đến từ
Hà Nam , Chưa có thông tin
Số lượng câu hỏi
5
Số lượng câu trả lời
2
Điểm GP
0
Điểm SP
0
Người theo dõi (0)
Đang theo dõi (0)
TA
TA
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
1. It's believed he left the country with the painting, a week ago
He....
2. " Turn off the computer. You aren't allowed to play the game, now"
Dick's mother prevented.....
3. Whatever gives you the impression thay I'm lying
Whatever makes.....
4. " If you asked me, I would lend you my car" he said to her
He told.....
5. My father í out of work, so he spends a lot of time at home
Being....
6. A men answered the phone. He told me you were away
The man.....
7.Joe doesn't like it when people treat him as a child
Joe resents.....
8. If all goes to plan, I'll study medicine
Rachel hoped.....
9. I wish I'd asked for his name and address
I regretted........
10. We should take the jumper back to the shop
Jack recommend.....
11. It's pointless to have that old typewrite repaired
That old typewrite isn't.....
12. We were unable to have a picnic because of the heavy rain
The heavy rain .....
13. Could you tell me the time of the last train to london
Could you tell me....
14. You must tell the truth
I insitst.....
15. It won't make any difference if it rains because we'll still go
We'll still go....
16. John only understood very little of what the teacher said
John could hardly.....
17. the number of accidents is reducing sharply
There í....
18. This is his first visit to Ha Noi
he is.....
19/ Whose suitcase is this The policeman asked us
The policeman asked us who that....
20. Helen wanted to know the name of Shirly's hair dresser's
Helen said " Shirly, where......
21.Joan eats very little so as not to put on weight
Joan eats very little because.....
22. Because there was a late frost, much of the crop was spoiled
A frost....
23. If you want to keep fit, you must play sports
Unless you.....
24. It's not worth trying to make her change her mind
There's.......
25." I think you should try the chicken marengo" said the waiter
The waiter recommended......
26. Whenever she went to Paris she bought a new dress
She never.....