
Concept explainers
(a)
Interpretation:
The correct number of hydrogens has to be added for the possible skeletons for a seven C compound with a six C chain and one double bond.
Concept Introduction:
The hydrocarbon is said to be a carbon atom bonded with hydrogen. The carbon atom contains four bonds. The bonds may be four single bonds or two single bonds and one double bond or one single bond and one double bond.
If the straight chain is branched, we get one type of hydrocarbon. If double bond is present, it restricts the rotation of the bond and forms cis and trans hydrocarbons.
(b)
Interpretation:
The correct number of hydrogens has to be added for the possible skeletons for a seven C compound with a five C chain and one double bond.
Concept Introduction:
The hydrocarbon is said to be a carbon atom bonded with hydrogen. The carbon atom contains four bonds. The bonds may be four single bonds or two single bonds and one double bond or one single bond and one double bond.
If the straight chain is branched, we get one type of hydrocarbon. If double bond is present, it restricts the rotation of the bond and forms cis and trans hydrocarbons.
(c)
Interpretation:
The correct number of hydrogens has to be added for the possible skeletons for a seven C compound with a five C ring and no double bonds.
Concept Introduction:
The hydrocarbon is said to be a carbon atom bonded with hydrogen. The carbon atom contains four bonds. The bonds may be four single bonds or two single bonds and one double bond or one single bond and one double bond.
If the straight chain is branched, we get one type of hydrocarbon. If double bond is present, it restricts the rotation of the bond and forms cis and trans hydrocarbons.

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Chapter 15 Solutions
Student Study Guide for Silberberg Chemistry: The Molecular Nature of Matter and Change
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