user-avatar
hanhnhioka
2 năm trước
Cho các sơ đồ phản ứng xảy ra theo đúng tỉ lệ mol E + 2NaOH Y + 2Z F + 2NaOH Y +T+ H2O Biết E, F đều là các hợp chất hữu cơ no, mạch hở, có công thức phân tử C4H6O4, được tạo thành từ axit cacboxylic và ancol. Cho các phát biểu sau: (a) Từ chất Z điều chế trực tiếp được axit axetic. (b) Chất T có nhiệt độ sôi thấp hơn axit axetic. (c) Đốt cháy Y, thu được sản phẩm gồm CO2, H2O và Na2CO3. (d) Chất E có khả năng tham gia phản ứng tráng bạc, (đ) Chất T được dùng để sát trùng dụng cụ y tế. Số phát biểu đúng là A. 2. B. 4. C. 5. D. 3.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

32. The blue car crashed. It was a Ford. → 33. That’s the travel agency. It sells cheap tickets. → 34. They are the spies. The police have been watching them. → 35. That is the name. I couldn’t remember it yesterday. → 36. Those are the astronauts. They were in orbit for six months. → 37. My parents send their best wishes. You met them last month. → 38. The parcel contained a bomb. They had opened it carefully. → 39. The match will be shown on TV tonight. They filmed it this afternoon. → 40. His sisters are identical twins. I saw them last year. → 41. The film is about two people. Their plane crashed in the jungle. → 42. The play is about a King. His ambition is to rule the world. → 43. The ballet is about the princess. Her stepmother hated her. → 44. The song is about 2 young lovers. Their romance ended happily. → 45. Charlie Chaplin died in 1977. His film amused millions. → 46. Rod Lee, the actor, has just won an Oscar. I know her sister. → 47. Our teacher speaks English perfectly. Her parents are Greek. → 48. The Taylor family now live in America. We bought their house. → 49. I love this song. Catherine sang the song. → 50. My parents gave me a birthday present. I like it. → 51. I love this song. The song was written by Catherine. → 52. I want to know about Miss Green. She has just won the gold medal. → 53. This is a new hotel. There are modern facilities in it. → 54. Very few people understood his lecture. The subject of his lecture was very strange. → 55. I’ve lost my ticket. It cost five pounds. → 56. The headmaster spoke to the boys. Their work has below standard. → 57. Trams (=silk) were made long ago. They are still used in several cities. → 58. The secretary wrote me a letter. She knows Fred. → 59. Family dinner is often served at 7 o’clock. It is the biggest meal of the day. → 60. My sister wants to speak to you. You met her yesterday. → 61. It is that man. He wrote this novel. → 62. This doesn’t show the place. The birds come from that place. → 63. The old man has died. You were talking to me about him. → 64. He sat on the table. One leg of the table was nearly broken down. → 65. Hoan Kiem lake is a historical place. Its water is always blue. → 66. He can change the situation. He always likes to do something new. → 67. That is just the thing. I didn’t want it to happen. → 68. You lost a key. Did you find it? → 69. I gave you some money. Where is it? → 70. Jill is wearing a jacket. I like it. → 71. She told a story. I didn’t believe it. → 72. You bought some oranges. How much were they? → 73. You gave me an umbrella. I’ve lost it. → 74. They invited some people to dinner. The people didn’t come. → 75. My secretary is a man. He can speak 2 languages. → 76. Some people live next door to us. They are very nice. → 77. Then a man passed me. He was driving a large modern car. → 78. I saw some people. Their car was broken down. → 79. This is a photograph of our classmates. We went on holiday with them. → 80. Jack has 3 brothers. All of them are married. → 81. Ann has a lot of books. She hasn’t read most of them. → 82. They’ve got 3 cars. They never use 2 of them. → 83. A bus crashed into a van yesterday. It was carrying 30 passengers. → 84. When I was walking home, there was a man. He was following me. → 85. I was waken up by the baby. She was crying. →

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team