Concept explainers
Interpretation:
Evidence to show that the structural formula may not always be useful in predicting smell is to be explained.
Concept introduction:
Structural formula of a molecule is very useful as it gives valuable information such as the
Answer to Problem 7E
The three alcohols such as geraniol, menthol and fencholsmell differently even though they have the same functional group(-OH). Geraniol smells like rose, menthol has smell of mint and fenchol smells like pine. Their structural formula only reveals that the functional group is hydroxyl. So it is evident that there is something else besides the functional group which determines the smell of a compound.
For example, isopentylacetate and ethyl butyrate have sweet smell due to presence of ester group but looking at their structural formula one cannot predict their distinct smell. Isopentylacetate has smell of bananas and ethy butyrate has smell of pineapple.
Explanation of Solution
Molecules, such as geraniol (C 10 H 18 O ), menthol (C 10 H 20 O ) and fenchol (C 10 H 18 O ) have same functional group, -OH. Their structural formulas are important but they are not sufficient to predict the distinct smell of each compound. There are many ester molecules which have distinct smell. Their structural formula only tells about the functional group (ester) present in them. For example isopentylacetate and ethyl butyrate have sweet smell due to presence of ester group but looking at their structure one cannot judge their distinct smell. It is the three dimensional structure of the molecule which helps in predicting the correct smell of the compound. Isopentylacetate has smell of bananas and ethylbutyrate has smell of pineapple.
The structural formula of a molecule shows that the molecule is flat with the carbon atoms arranged in line whereas the ball and stick model shows the three dimensional structure of the molecule. This helps in better understanding the shape of the molecule. Differently shaped molecules have different smell even if they have the same functional groups.
Chapter U2 Solutions
Living By Chemistry: First Edition Textbook
Additional Science Textbook Solutions
Biology: Life on Earth with Physiology (11th Edition)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Applications and Investigations in Earth Science (9th Edition)
Microbiology: An Introduction
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Cosmic Perspective Fundamentals
- Recognizing ampli Draw an a amino acid with a methyl (-CH3) side chain. Explanation Check Click and drag to start drawing a structure. X Carrow_forwardWrite the systematic name of each organic molecule: structure name × HO OH ☐ OH CI CI O CI OH OHarrow_forwardく Check the box under each a amino acid. If there are no a amino acids at all, check the "none of them" box under the table. Note for advanced students: don't assume every amino acid shown must be found in nature. COO H3N-C-H CH2 HO CH3 NH3 O CH3-CH CH2 OH Onone of them Explanation Check + H3N O 0. O OH + NH3 CH2 CH3-CH H2N C-COOH H O HIC + C=O H3N-C-O CH3- - CH CH2 OH Х 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accesarrow_forward
- Write the systematic name of each organic molecule: structure HO-C-CH2-CH3 O -OH CH3-CH2-CH2-CH2-CH2-C-OH CH3 CH3-CH-CH2-C-OH Explanation Check S namearrow_forwardtheres 2 productsarrow_forwardDraw the major product of this solvolysis reaction. Ignore any inorganic byproducts. + CH3CH2OH Drawing Q Atoms, Bonds and Rings OCH2CH3 || OEt Charges OH 00-> | Undo Reset | Br Remove Done Drag To Pan +arrow_forward
- Draw the major product of this SN1 reaction. Ignore any inorganic byproducts. CH3CO2Na CH3CO2H Drawing + Br Q Atoms, Bonds and Rings OAC Charges OH ОАс Na ဂ Br Undo Reset Remove Done Drag To Pan +arrow_forwardOrganic Functional Groups entifying positions labeled with Greek letters in acids and derivatives 1/5 ssible, replace an H atom on the a carbon of the molecule in the drawing area with a ce an H atom on the ẞ carbon with a hydroxyl group substituent. ne of the substituents can't be added for any reason, just don't add it. If neither substi er the drawing area. O H OH Oneither substituent can be added. Check D 1 Accessibility ado na witharrow_forwardDifferentiate between electrophilic and nucleophilic groups. Give examples.arrow_forward
- An aldehyde/ketone plus an alcohol gives a hemiacetal, and an excess of alcohol gives an acetal. The reaction is an equilibrium; in aldehydes, it's shifted to the right and in ketones, to the left. Explain.arrow_forwardDraw a Haworth projection or a common cyclic form of this monosaccharide: H- -OH H- OH H- -OH CH₂OHarrow_forwardAnswer the question in the first photoarrow_forward
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY