Đun nóng este có công thức phân tử C 5 H 10 o2 với dung dịch NaOH, thu được muối và ancol bậc Hải

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Khi đun nóng chất X có công thức phân tử C5H10O2 với dung dịch NaOH thu được C2H5COONa và ancol Y. Y có tên là

A.

A: Ancol Etylic

B.

B: Ancol Propyolic

C.

C: Ancol isopropyolic

D.

D: Ancol Metylic

Đáp án và lời giải

Đáp án:A

Lời giải:

Chọn A.

Vậy đáp án là A

Chia sẻ

Một số câu hỏi khác cùng bài thi.

• Etyl fomat là chất mùi thơm, không độc, được dùng làm chất tạo hương trong công nghiệp thực phẩm, có phân tử khối là:

• X, Y là hai hợp chất hữu cơ đơn chức phân tử chỉ chứa C, H, O. Khi đốt cháy X, Y với số mol bằng nhau hoặc khối lượng bằng nhau đều thu được với tỉ lệ mol tương ứng 2 : 3 và với tỉ lệ mol tương ứng 1 : 2. Số cặp chất X, Y thỏa mãn là

• Chất X có công thức cấu tạo CH2=CH – COOCH3. Tên gọi của X là
  

• Este nào sau đây có công thức phân tửC4H8O2?

• Este X chứa vòng benzen có công thức phân tử là C8H8O2. Số đồng phân của X là

• Chất X có công thức cấu tạo CH3CH2COOCH3. Tên gọi của X là:

• Một este có công thức phân tử là C4H6O2, khi thuỷ phân trong môi trường axit thu được axetanđehit. Công thức cấu tạo thu gọn của este đó là:

• Hai este A và B là dẫn xuất của benzen có công thức phân tử là C9H8O2 . A và B đều cộng hợp với Br2 tỉ lệ mol 1 : 1 . A tác dụng với dung dịch NaOH cho 1 muối và 1 andehit. B tác dụng với dung dịch NaOH dư cho 2 muối và H2O. Công thức cấu tạo của A và B lần lượt là :

• Este nào sau đây có phân tử khối là 88?

• Số đồng phân este ứng với CTPT C4H8O2 là ?

• Este Xcótronghoanhàicócôngthứcphântử C9H10O2, KhithủyphânXtạoraancolthơmY. TêngọicủaX là:

• Cho sơđồphảnứngsau :

  
  Biếtrằng X,Y,Z,Tlànhữngsảnphẩmchính . Côngthứccấutạocủachất T là :

• Cho các este: C6H5OOCCH3 (1): CH3COOCH=CH2(2); CH2=CH-COOCH3(3); CH3-CH=CH-OOC-CH3(4); (CH3COO)2CH-CH3(5). Những este nào thủy phân không tạo ra ancol.

• Số đồng phân đơn chức mạch hở của C4H8O2 có khả năng tham gia phản ứng tráng bạc là:
  

• Etse X có công thức cấu tạo CH3COOCH2C6H5 (C6H5– gốc phenyl). Tên gọi của X là:

• Hợp chất hữu cơ X có công thức phân tử C6H10O2, cho 9,12 gam X tác dụng với dung dịch NaOH đủ thu được dung dịch Y, cho dung dịch Y tác dụng với dung dịch AgNO3 dư trong NH3 đun nóng thu được 34,56 gam Ag. Số đồng phân cấu tạo của X là:

• Khi đun nóng chất X có công thức phân tử C5H10O2 với dung dịch NaOH thu được C2H5COONa và ancol Y. Y có tên là

• Este nào sau đây có công thức phân tử C4H6O2?

• Số đồng phân este ứng với công thức phân tử C3H6O2là

• Chất X có công thức cấu tạo: CH3CH2COOCH3. Tên gọi của X là:

• Chất X có cấu tạo CH3CH2­COOCH3. Tên gọi của X là

• Xàphònghóaestenàosauđâythuđượcsảnphẩmcókhảnăngthamgiaphảnứngtrángbạc

• Este nào sau đây có công thức phân tử C4H8O2?

• Ứngvớicôngthứcphântử C4H8O2cósốđồngphânestelà

• Hợp chất X có công thức cấu tạo HCOOC2H5. X có tên gọi nào sau đây?

• Tên gọi của CH3COOC6H5 là

• Đốt cháy hoàn toàn 3,4 gam hợp chất hữu cơ X (phân tử chỉ có 1 loại nhóm chức), cho toàn bộ sản phẩm cháy vào bình chứa dung dịch

  
  dư thấy xuất hiện 16 gam kết tủa trắng đồng thời khối lượng dung dịch giảm 7,16 gam. Đun nóng 34 gam X trong 500 ml dung dịch NaOH 1M thấy tạo thành chất hữu cơ Y. Phần dung dịch còn lại đem cô cạn thu được 41,6 gam chất rắn trong đó có một muối natri của axit hữu cơ đơn chức. Chất Y phản ứng với
  
  cho dung dịch xanh lam. Cho tỉ khối hơi của X so với khí
  
  là 85 (ở cùng điều kiện), các phản ứng hóa học xảy ra hoàn toàn. Khẳng định nào sau đây là đúng:

• Cho sơ đồ chuyển hoá:

  
  (este đa chức) (este đa chức) Tên gọi của Y là:

• Đốt chấy hoàn toàn 3,7 gam este X thu được 6,6 gam CO2và 2,7 gam nước. Sốđồng phân cấu tạo của X là:

• Este có CTPT C2H4O2có tên gọi nào sau đây?

• Cho este có công thức cấu tạo: CH2=C(CH3)COOCH3. Tên gọi của este đó là

• Thủy phân este X mạch hở có công thức phân tử

  
  , sảnphẩm thu được có khả năng tráng gương. Số este X thỏamãntínhchất trên là:

• Tên gọi của este có công thức cấu tạo C6H5⎼COO⎼CH=CH2là:

• Hợp chất hữu cơ X có công thức phân tử C3H6O3. Khi đun nóng X với dung dịch NaOH dư thu được 2 sản phẩm hữu cơ Y và Z, trong đó Y hòa tan được Cu(OH)2. Kết luận không đúng về X là:

  A.X có tham gia phản ứng tráng bạc

  B.X tác dụng được với dung dịch HCl

  C.X là hợp chất hữu cơ đa chức.

  D.X tác dụng được với Na

• Este có công thức

  
  , tên được gọi là:

• Tổng số chất hữu cơ mạch hở, có cùng công thức phân tử C2H4O2 là:

• Số chất có CTPT C4H8O2 có phản ứng với NaOH là:

• Este no, đơn chức, mạch hở có công thức phân tử chung là:

• Trường hợp nào sau đây tạo sản phẩm là ancol và muối natri của axit cacboxylic

• Có bao nhiêu hợp chất hữu cơ, mạch hở (chứa C, H, O) có phân tử khối là 60 và tác dụng được với NaOH?

Một số câu hỏi khác có thể bạn quan tâm.

• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks:

  Traditionally, Americans and Asians have very(20) _____ideas about love and marriage. Americans believe in ‘romantic’ marriage – a boy and a girl are (21)____ to each other, fall in love, and decide to marry each other. Asians, on the other hand, believe in contractual marriage – the parents of the bride and the groom decide on the marriage; and love – if it ever develops – is supposed to follow(22) _____, not precede it. To show the differences, a(23) ______was conducted among American, Chinese and Indian students to determine their attitudes (24)_____ love and marriage.

  Question 24:

• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks:

  Traditionally, Americans and Asians have very(20) _____ideas about love and marriage. Americans believe in ‘romantic’ marriage – a boy and a girl are (21)____ to each other, fall in love, and decide to marry each other. Asians, on the other hand, believe in contractual marriage – the parents of the bride and the groom decide on the marriage; and love – if it ever develops – is supposed to follow(22) _____, not precede it. To show the differences, a(23) ______was conducted among American, Chinese and Indian students to determine their attitudes (24)_____ love and marriage.

  Question 23:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone(24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted childunusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before hecould speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 24:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone(24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted childunusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before hecould speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 25:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone(24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted childunusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before hecould speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 27:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone(24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted childunusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before hecould speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 28:

• Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

  In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

  Question 33:

• Read the passage and mark A, B, C, or D to indicate the correct answer to each of the blanks.

  In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

  Question 34:

• Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

  In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

  Question 35:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 46 to 50:

  Here are tips that help succeed in your job interview: Always arrive early. If you do not know (46) _________ the organization is located, call for exact directions (47) ____________ advance. Leave some extra time for any traffic, parking, or unexpected events. If you are running late, call right away and let someone know. The best time to arrive is approximately 5 - 10 minutes early. Give yourself the time to read your resume one more time, to catch your breath, and to be ready for the interview. Once you are at the office, treat everyone you encounter with respect. Be (48) _________ to everyone as soon as you walk in the door. Wear a professional business suit. This point should be emphasized enough. First (49) ____________ are extremely important in the interview process. Women should (50)_________ wearing too much jewelry or make up. Men should avoid flashy suits or wearing too much perfume. It is also important that you feel comfortable. While a suit is the standard interview attire in a business environment, if you think it is an informal environment, call before and ask. Regardless, you can never be overdressed if you are wearing a tailored suit.

  Question 46: