{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Reactions and Mechanisms", "refinement": "This problem involves the chemical reactions of organic compounds, specifically hydrogenation and the properties of mixtures of liquids.", "specific_scope": "The focus is on the transformation of an equimolar mixture of two liquids that decolorizes bromine water into another mixture that does not, and the subsequent hydrogenation process leading to a hydrocarbon.", "goal": "Identify the molecular formula of the hydrocarbon W based on the given mass fraction of hydrogen and the context of the reactions."}, "summary": "This problem is rooted in organic chemistry, specifically focusing on the reactions of liquid mixtures and hydrogenation processes. It describes the transformation of an equimolar mixture of two liquids that can decolorize bromine water into another mixture that cannot, followed by hydrogenation that yields a hydrocarbon W. The goal is to determine the molecular formula of hydrocarbon W based on the provided mass fraction of hydrogen (14.28%). The answer to the question is 12, indicating the molecular weight or a related property of the hydrocarbon."}