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Concept explainers
(a)
Interpretation:
The given statement is true or false should be determined.
The IUPAC name of an alkene is derived from the name of the longest carbon chain that contains the carbon-carbon double bond.
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism. If same groups are present on the same side, then the isomer is called as cis-isomer and the same groups are present on different side the isomer is called as trans-isomer.
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Answer to Problem 12.21P
The given statement is true.
Explanation of Solution
As per general rules of
(b)
Interpretation:
The given statement is true or false should be determined.
The IUPAC name of
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of functional groups, side chains, double or triple bonds etc. in alphabetical order to provide systematic name to compound.
Alkenes are the compounds with very weak London dispersion forces and are nonpolar. They contain same skeleton structure and physical properties like alkanes but liquid at room temperature.
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism.
If same groups are present on the same side, then the isomer is called as cis- isomer and the same groups are present on different side the isomer is called as trans- isomer.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.21P
The given statement is false.
Explanation of Solution
IUPAC name of
Therefore, the given statement is false.
(c)
Interpretation:
The given statement is true or false should be determined.
2-Methyl-2-butene shows cis-trans isomerism.
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of functional groups, side chains, double or triple bonds etc. in alphabetical order to provide systematic name to compound.
Alkenes are the compounds with very weak London dispersion forces and are nonpolar. They contain same skeleton structure and physical properties like alkanes but liquid at room temperature.
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism.
If same groups are present on the same side, then the isomer is called as cis- isomer and the same groups are present on different side the isomer is called as trans- isomer.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.21P
The given statement is false.
Explanation of Solution
2-Methyl-2-butene contains two methyl groups present on carbon atom of carbon-carbon double bond other carbon contains also methyl group.
To get cis and trans isomers, two different groups should be present on the carbon atoms of the carbons with double bond.
Thus, the statement is false.
(d)
Interpretation:
The given statement is true or false should be determined.
1,2-dimethylcyclohexene shows cis-trans isomerism.
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of functional groups, side chains, double or triple bonds etc. in alphabetical order to provide systematic name to compound.
Alkenes are the compounds with very weak London dispersion forces and are nonpolar. They contain same skeleton structure and physical properties like alkanes but liquid at room temperature.
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism.
If same groups are present on the same side then the isomer is called as cis- isomer and the same groups are present on different side the isomer is called as trans- isomer.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.21P
The given statement is false.
Explanation of Solution
Following are the structures of the isomers of 1,2-dimethylcyclohexane. Form this, we can see that all four atoms of carbon-carbon double bond are lying in same plane.
Therefore, the given statement is false.
(e)
Interpretation:
The given statement is true or false should be determined.
The IUPAC name of
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of functional groups, side chains, double or triple bonds etc. in alphabetical order to provide systematic name to compound.
Alkenes are the compounds with very weak London dispersion forces and are nonpolar. They contain same skeleton structure and physical properties like alkanes but liquid at room temperature.
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism.
If same groups are present on the same side then the isomer is called as cis- isomer and the same groups are present on different side the isomer is called as trans- isomer.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.21P
The given statement is true.
Explanation of Solution
The IUPAC name of
(f)
Interpretation:
The given statement is true or false should be determined.
1,3-Butadiene has two carbon-carbon double bonds and 22 =4 stereoisomers are possible for it.
Concept Introduction:
The IUPAC name is the set of rules that is created and applied by the International Union of pure and Applied Chemistry to generate systematic proper name of chemical compounds. This nomenclature is used to describe and identify the type and position of functional groups, side chains, double or triple bonds etc. in alphabetical order to provide systematic name to compound.
Alkenes are the compounds with very weak London dispersion forces and are nonpolar. They contain same skeleton structure and physical properties like alkanes but liquid at room temperature.
Cis-trans stereoisomerisms are seen in alkenes compounds. Due to presence of two different groups bonded to carbon of carbon-carbon double bond, restricted action occurs in it and results into cis-trans isomerism.
If same groups are present on the same side, then the isomer is called as cis- isomer and the same groups are present on different side the isomer is called as trans- isomer.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.21P
The given statement is false.
Explanation of Solution
Following is the structure of 1,3-Butadiene. There are no stereocenters are present in the structure of 1,3-Butadiene. There should be presence of different groups for isomerism.
Therefore, the given statement is false.
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Chapter 12 Solutions
Introduction to General, Organic and Biochemistry
- %Reflectance 95 90- 85 22 00 89 60 55 50 70 65 75 80 50- 45 40 WA 35 30- 25 20- 4000 3500 Date: Thu Feb 06 17:21:21 2025 (GMT-05:0(UnknownD Scans: 8 Resolution: 2.000 3000 2500 Wavenumbers (cm-1) 100- 2981.77 1734.25 2000 1500 1000 1372.09 1108.01 2359.09 1469.82 1181.94 1145.20 1017.01 958.45 886.97 820.49 668.25 630.05 611.37arrow_forwardNonearrow_forwardCH3 CH H3C CH3 H OH H3C- -OCH2CH3 H3C H -OCH3 For each of the above compounds, do the following: 1. List the wave numbers of all the IR bands in the 1350-4000 cm-1 region. For each one, state what bond or group it represents. 2. Label equivalent sets of protons with lower-case letters. Then, for each 1H NMR signal, give the 8 value, the type of splitting (singlet, doublet etc.), and the number protons it represents. of letter δ value splitting # of protons 3. Redraw the compound and label equivalent sets of carbons with lower-case letters. Then for each set of carbons give the 5 value and # of carbons it represents. letter δ value # of carbonsarrow_forward
- Nonearrow_forwardCarbohydrates- Draw out the Hawthorne structure for a sugar from the list given in class. Make sure to write out all atoms except for carbons within the ring. Make sure that groups off the carbons in the ring are in the correct orientation above or below the plane. Make sure that bonds are in the correct orientation. Include the full name of the sugar. You can draw out your curve within the text box or upload a drawing below.arrow_forwardHow many milliliters of 97.5(±0.5) wt% H2SO4 with a density of 1.84(±0.01) g/mL will you need to prepare 2.000 L of 0.110 M H2SO4? If the uncertainty in delivering H2SO4 is ±0.01 mL, calculate the absolute uncertainty in the molarity (0.110 M). Assume there is negligible uncertainty in the formula mass of H2SO4 and in the final volume (2.000 L) and assume random error.arrow_forward
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