{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Stereochemistry and Reaction Mechanisms", "refinement": "This problem involves the analysis of stereoisomers and their behavior during chemical reactions and chromatographic separation.", "specific_scope": "The focus is on the reactions of (E)-oct-4-ene and (Z)-oct-4-ene with mCPBA, leading to the formation of epoxides and their subsequent hydrolysis, and how these products are detected using HPLC.", "goal": "Determine the number of peaks observed in standard and chiral HPLC for the products of the reactions involving (E)- and (Z)-oct-4-ene."}, "summary": "In this problem, we analyze the reactions of (E)-oct-4-ene and (Z)-oct-4-ene with mCPBA, which leads to the formation of epoxides that are then hydrolyzed. In standard HPLC, both reactions yield 2 distinct products, resulting in 2 peaks. However, in chiral HPLC, the reactions produce 3 peaks due to the presence of enantiomers and diastereomers, reflecting the stereochemical differences between the products. Thus, the chemist observes 2 peaks in standard HPLC and 3 peaks in chiral HPLC."}