{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy", "refinement": "This problem involves interpreting 1H NMR data in the context of a specific aromatic compound with functional groups.", "specific_scope": "The focus is on identifying the correct 1H NMR spectrum for a tri-substituted aromatic compound based on its structural features and functional groups indicated by the FTIR spectrum.", "goal": "Select the correct 1H NMR data that corresponds to the synthesized compound with a carbonyl group and an aromatic-nitro group."}, "summary": "This problem requires understanding how to interpret 1H NMR data in relation to the structure of a tri-substituted aromatic compound. The presence of a carbonyl group and an aromatic-nitro group suggests specific chemical shifts for the aromatic protons and any additional substituents. The goal is to identify the correct set of chemical shifts that match the expected splitting patterns and integration based on the compound's structure. The correct answer is the 1H NMR data showing peaks at 8.0 (2H, d), 7.5 (2H, d), and 2.4 (3H, s), which aligns with the expected characteristics of the compound."}