Final answer:
The compound with the molecular formula C6H10O gives an IR spectrum with a key absorption peak at 1716 cm-¹, indicating the presence of a carbonyl group.
Step-by-step explanation:
The compound with the molecular formula C6H10O gives the following IR spectrum:
The key absorption peak in this spectrum is that from the carbonyl double bond, at 1716 cm-¹. This peak is a strong indication of the presence of a carbonyl group. Other functional groups such as carboxylic acids, esters, ketones, aldehydes, conjugated unsaturated ketones, and amides also have characteristic absorbance in the 1650-1750 cm²¹ range.