교과서 질문
Rank the following compounds from highest wavenumber to lowest wavenumber for their C=O absorption band:
1072
views
Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
당신이 사용하는 게 아니라요?교과서 변경다른 교과서를 선택하세요
TOC.tableOfContents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding31
- Ch. 2 - Acids and Bases: Central to Understanding Organic Chemistry84
- Ch. 3 - An Introduction to Organic Compounds: Nomenclature, Physical Properties, and Structure183
- Ch. 4 - Isomers: The Arrangement of Atoms in Space121
- Ch. 5 - Alkenes: Structure, Nomenclature, and an Introduction to Reactivity • Thermodynamics and Kinetics83
- Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions175
- Ch. 7 - The Reactions of Alkynes • An Introduction to Multistep Synthesis119
- Ch. 8 - Delocalized Electrons: Their Effect on Stability, pKa, and the Products of a Reaction • Aromaticity and Electronic Effects: An Introduction to the Reactions of Benzene148
- Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides212
- Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds131
- Ch. 11 - Organometallic Compounds60
- Ch. 12 - Radicals90
- Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy62
- Ch. 14 - NMR Spectroscopy95
- Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives123
- Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives141
- Ch. 17 - Reactions at the Alpha-Carbon101
- Ch. 18 - Reactions of Benzene and Substituted Benzenes144
- Ch. 19 - More About Amines • Reactions of Heterocyclic Compounds49
- Ch. 20 - The Organic Chemistry of Carbohydrates80
- Ch. 21 - Amino Acids, Peptides, and Proteins57
- Ch. 22 - Catalysis in Organic Reactions and in Enzymatic Reactions35
- Ch. 23 - The Organic Chemistry of the Coenzymes—Compounds Derived from Vitamins1
- Ch. 28 - Pericyclic Reactions58
모든 교과서
Bruice 8th EditionCh. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy문제 58a
Bruice 8th EditionCh. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy문제 58a13장, 문제 58a
The mass spectrum for a compound with molecular weight of 102 is shown below. Its IR spectrum has a broad, strong absorption at 3600 cm–1 and a medium absorption at 1360 cm–1.
a. Identify the compound.
<IMAGE>
검증된 단계별 안내1
Step 1: Analyze the molecular weight of the compound, which is given as 102. This indicates the molecular ion peak (M+) in the mass spectrum should be at m/z = 102.
Step 2: Examine the IR spectrum data. The broad, strong absorption at 3600 cm⁻¹ suggests the presence of an -OH group, characteristic of alcohols. The medium absorption at 1360 cm⁻¹ indicates possible C-H bending vibrations, often associated with methyl groups.
Step 3: Look at the mass spectrum provided. The molecular ion peak (M+) at m/z = 102 confirms the molecular weight. Fragmentation patterns, such as peaks at m/z = 45 and m/z = 70, suggest possible loss of functional groups or fragments like CH3 or CH2OH.
Step 4: Combine the IR and mass spectrum data. The presence of an -OH group (from IR) and fragmentation patterns (from mass spectrum) suggest the compound is likely an alcohol. The molecular formula could be C4H10O, which matches the molecular weight of 102.
Step 5: Based on the data, the compound is likely butanol (C4H10O), as it fits the molecular weight, IR absorption characteristics, and fragmentation patterns observed in the mass spectrum.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
5m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Mass Spectrometry
Mass spectrometry is an analytical technique used to measure the mass-to-charge ratio of ions. It provides information about the molecular weight of a compound and its structural features. In the context of the question, the mass spectrum indicates a molecular ion peak corresponding to the molecular weight of 102, which helps in identifying the compound.
추천 영상:
01:25
How to Read a Mass Spectrum
Infrared (IR) Spectroscopy
Infrared spectroscopy is a technique that measures the absorption of infrared light by a compound, providing information about its functional groups. The broad absorption at 3600 cm–1 suggests the presence of an -OH group, while the medium absorption at 1360 cm–1 may indicate a C-H bending vibration, which is common in alkanes or aromatic compounds.
추천 영상:
16:04General Features of IR Spect
Functional Group Identification
Identifying functional groups is crucial in organic chemistry as they determine the chemical reactivity and properties of compounds. The combination of mass spectrometry and IR spectroscopy data allows for the deduction of possible structures for the compound with a molecular weight of 102, guiding the identification process.
추천 영상:
02:36Identifying Functional Groups
관련 실천
교과서 질문
The IR spectrum of compound A with a molecular formula of C5H12O is shown below. Compound A is oxidized to give compound B, a ketone with a molecular formula of C5H10O. When compound A is heated with H2SO4, compounds C and D are obtained. Considerably more D is obtained than C. Reaction of compound C with O3, followed by treatment with dimethyl sulfide, gives two products: formaldehyde and compound E, with a molecular formula of C4H8O. Reaction of compound D with O3, followed by treatment with dimethyl sulfide, gives two products: compound F, with a molecular formula of C3H6O, and compound G, with a molecular formula of C2H4O. What are the structures of compounds A through G?
<IMAGE>
1131
views
교과서 질문
Which one of the following five compounds produced the IR spectrum shown below?
<IMAGE>
1352
views
교과서 질문
Rank the following compounds from highest wavenumber to lowest wavenumber for their C-O absorption band:
1965
views
교과서 질문
What hydrocarbons that contain a six-membered ring will have a molecular ion peak at m/z = 112?
1297
views
교과서 질문
The mass spectrum for a compound with molecular weight of 102 is shown below. Its IR spectrum has a broad, strong absorption at 3600 cm–1 and a medium absorption at 1360 cm–1.
b. Show the mechanism for formation of the peak at m/z = 84.
<IMAGE>
1566
views