{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Stereochemistry and Reactions", "refinement": "This problem involves the reactions of alkenes with bromine and the resulting products' analysis using chromatography.", "specific_scope": "The focus is on the stereochemical outcomes of the reactions of (E)-oct-4-ene and (Z)-oct-4-ene with bromine, and how these outcomes are detected in standard and chiral HPLC.", "goal": "To determine the number of peaks observed in standard and chiral HPLC for the products of the reactions."}, "summary": "In this problem, we analyze the reactions of (E)-oct-4-ene and (Z)-oct-4-ene with bromine, focusing on the stereochemical outcomes. Both reactions yield dibrominated products that are not chiral, resulting in 2 distinct products for each reaction. Therefore, in standard HPLC, the chemist observes 2 peaks corresponding to the two products from each reaction. In chiral HPLC, since the products are not chiral, the same 2 peaks are observed. Thus, the answer is 2 peaks in standard HPLC and 2 peaks in chiral HPLC."}