The formula C6H5CN represents which compound?

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Multiple Choice

The formula C6H5CN represents which compound?

Explanation:
Recognizing a nitrile substituent attached to a benzene ring is the key idea here. The formula C6H5CN shows a benzene ring (C6H5) with a cyano group (-CN) attached. That combination is benzonitrile (also called benzenitrile). Other options would require different groups and formulas: aniline has an -NH2 group (C6H7N), benzamide includes a carbonyl and an amide (C7H7NO), and nitrobenzene has a -NO2 group (C6H5NO2). So the nitrile-bearing benzene is the correct structure, i.e., benzonitrile.

Recognizing a nitrile substituent attached to a benzene ring is the key idea here. The formula C6H5CN shows a benzene ring (C6H5) with a cyano group (-CN) attached. That combination is benzonitrile (also called benzenitrile). Other options would require different groups and formulas: aniline has an -NH2 group (C6H7N), benzamide includes a carbonyl and an amide (C7H7NO), and nitrobenzene has a -NO2 group (C6H5NO2). So the nitrile-bearing benzene is the correct structure, i.e., benzonitrile.

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