For which one of the following molecular formulas is there only one possible structure?
A - VCE - SSCE Chemistry - Question 11 - 2010 - Paper 1
Question 11
For which one of the following molecular formulas is there only one possible structure?
A. C4H6
B. C5H12Cl2
C. C4H2Cl2
D. C2H5OH
Worked Solution & Example Answer:For which one of the following molecular formulas is there only one possible structure?
A - VCE - SSCE Chemistry - Question 11 - 2010 - Paper 1
Step 1
A. C4H6
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Answer
The molecular formula C4H6 can represent multiple structures, such as different isomers including butadiene and cyclobutane.
Step 2
B. C5H12Cl2
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Answer
C5H12Cl2 can have several structural isomers, including different placements of chlorine atoms on the carbon skeleton.
Step 3
C. C4H2Cl2
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C4H2Cl2 also exhibits isomerism due to the presence of both hydrogen and chlorine, leading to multiple potential structures.
Step 4
D. C2H5OH
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Answer
C2H5OH (ethanol) has only one possible structure due to its specific arrangement of atoms, which does not allow for isomerism.
