Question: Which of the following pairs of compounds are structural isomers?
Options:
Cis-2-butene and trans-2-butene
1-pentanol and 2-pentanol
Ethyl alcohol and dimethyl ether
Glucose and galactose
Correct Answer: Ethyl alcohol and dimethyl ether
Solution:
Ethyl alcohol (ethanol) and dimethyl ether have the same molecular formula but different structures.
Which of the following pairs of compounds are structural isomers?
Practice Questions
Q1
Which of the following pairs of compounds are structural isomers?
Cis-2-butene and trans-2-butene
1-pentanol and 2-pentanol
Ethyl alcohol and dimethyl ether
Glucose and galactose
Questions & Step-by-Step Solutions
Which of the following pairs of compounds are structural isomers?
Step 1: Understand what structural isomers are. Structural isomers are compounds that have the same molecular formula but different arrangements of atoms.
Step 2: Identify the molecular formula of the compounds in question. For ethyl alcohol (ethanol), the molecular formula is C2H6O. For dimethyl ether, the molecular formula is also C2H6O.
Step 3: Compare the structures of the two compounds. Ethyl alcohol (ethanol) has a hydroxyl group (-OH) attached to a carbon chain, while dimethyl ether has an ether group (R-O-R) with two methyl groups.
Step 4: Conclude that since both compounds have the same molecular formula (C2H6O) but different structures, they are structural isomers.
No concepts available.
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