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The image shows three infrared (IR) spectra, labeled 7, 8, and 9.

7. C9H10O: The IR spectrum exhibits a broad absorption band around 3300 cm-1, indicative of an O-H stretch (alcohol). Sharp peaks are present around 3000 cm-1, suggesting C-H stretches of aromatic or alkyl groups. There are numerous peaks in the fingerprint region (below 1500 cm-1), providing a complex pattern.

8. C9H10O: This spectrum also shows a broad absorption band around 3300 cm-1, suggesting the presence of an alcohol. Similar to spectrum 7, there are C-H stretches around 3000 cm-1. The fingerprint region differs from spectrum 7.

9. C3H5O2Cl: This spectrum features a strong, broad absorption band above 3000 cm-1 possibly indicating the presence of a carboxylic acid. A strong carbonyl (C=O) stretch is present around 1750 cm-1. There is absorption in the region of 700-800 cm-1 which is indicative of a C-Cl stretch.

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Alex P

Mar 30, 2026, 2:30 PM

Sofia, Bulgaria

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The image shows three infrared (IR) spectra, labeled 7, 8, and 9. 7. C9H10O: The IR spectrum exhibits a broad absorption band around 3300 cm-1, indicative of an O-H stretch (alcohol). Sharp peaks are present around 3000 cm-1, suggesting C-H stretches of aromatic or alkyl groups. There are numerous peaks in the fingerprint region (below 1500 cm-1), providing a complex pattern. 8. C9H10O: This spectrum also shows a broad absorption band around 3300 cm-1, suggesting the presence of an alcohol. Similar to spectrum 7, there are C-H stretches around 3000 cm-1. The fingerprint region differs from spectrum 7. 9. C3H5O2Cl: This spectrum features a strong, broad absorption band above 3000 cm-1 possibly indicating the presence of a carboxylic acid. A strong carbonyl (C=O) stretch is present around 1750 cm-1. There is absorption in the region of 700-800 cm-1 which is indicative of a C-Cl stretch. There is no indication of location or city in the image.

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Alex P

Mar 30, 2026, 2:30 PM

Sofia, Bulgaria

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