Which of the following pairs are structural isomers?
Practice Questions
Q1
Which of the following pairs are structural isomers?
Cis-2-butene and trans-2-butene
1-pentanol and 2-pentanol
Ethylene and acetylene
Glucose and galactose
Questions & Step-by-Step Solutions
Which of the following pairs are structural isomers?
Step 1: Understand what structural isomers are. They are compounds that have the same molecular formula but different arrangements of atoms.
Step 2: Identify the compounds given in the question, which are 1-pentanol and 2-pentanol.
Step 3: Look at the structure of 1-pentanol. It has a hydroxyl group (-OH) on the first carbon of the pentane chain.
Step 4: Look at the structure of 2-pentanol. It has a hydroxyl group (-OH) on the second carbon of the pentane chain.
Step 5: Compare the positions of the hydroxyl group in both compounds. Since they are on different carbons, they are arranged differently.
Step 6: Conclude that because 1-pentanol and 2-pentanol have the same molecular formula (C5H12O) but different structures, they are structural isomers.
