CHEMISTRY
JAMB 2005 - Question 16
Chemistry 2005 JAMB Past Questions - Question 16: How many hydrogen atoms does a single ring cycloalkane have less than the corresponding open-chain alkane?
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
A
Explanation
For a single-ring cycloalkane compared to the corresponding open-chain alkane, each carbon atom in the ring contributes one hydrogen atom less than it would in the open-chain alkane. This is because each carbon in the ring is bonded to two other carbons and one hydrogen, while each carbon in the open-chain alkane is bonded to three other hydrogens.
The general formula for an alkane is CₙH₂ₙ₊₂, where n is the number of carbon atoms. In a cycloalkane with a single ring, the general formula is CₙH₂ₙ. Therefore, the difference in the number of hydrogen atoms is 2 for each carbon in the ring.
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