{"knowledge_schema": {"broad_category": "Chemistry \u2192 Spectroscopy \u2192 NMR Spectroscopy", "refinement": "This problem involves interpreting 1H NMR spectra to identify the structure of organic compounds based on their chemical shifts and integration ratios.", "specific_scope": "The focus is on analyzing the signals in the NMR spectrum of a 1:1 mixture of two aromatic compounds with the molecular formula C10H14, specifically looking for singlets and their ratios.", "goal": "Identify the two aromatic compounds present in the mixture based on the provided NMR spectral data."}, "summary": "This problem requires understanding NMR spectroscopy to identify two aromatic compounds in a mixture based on their chemical shifts and integration ratios. The presence of two singlets at around 7.0 ppm in a 1:1 ratio indicates two distinct aromatic environments, while the three singlets at around 2.3 ppm in a 3:2:1 ratio suggest different types of methyl groups. The correct identification of the compounds is based on matching these spectral features with the provided options, leading to the conclusion that the mixture contains 1,2,3,5-tetramethylbenzene and 1,3,5-trimethylbenzene."}