
(a)
Interpretation: Below drawn alkane should be named using the IUPAC system.
CH3-CH2-CH3
Concept Introduction: Organic compounds containing single-bonded Carbon and Hydrogen atoms are
Formula for Alkane is CnH2n+2
(a)

Answer to Problem 12LC
IUPAC name is Propane
Explanation of Solution
Alkane containing 3 Carbon atoms has n=3.
Substituting n=3 in the molecular formula for Alkane (CnH2n+2), we get C3H8.
Therefore, the IUPAC name is Propane.
(b)
Interpretation: Below drawn alkane should be named using the IUPAC system.
Concept Introduction: Organic compounds containing single-bonded Carbon and Hydrogen atoms are Alkanes.
Formula for Alkane is CnH2n+2
(b)

Answer to Problem 12LC
IUPAC name is 2,3-di methyl pentane
Explanation of Solution
Alkane containing 5 Carbon atoms has n=5.
Substituting n=5 in the molecular formula for Alkane (CnH2n+2), we get C5H12.
Molecule of Pentane with Methyl groups (-CH3) is replacing Hydrogen atoms on Carbon atoms 2 and 3.
Therefore, the IUPAC name is 2,3-di methyl pentane.
Chapter 22 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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