{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Stereochemistry and Reaction Mechanisms", "refinement": "This problem involves the reactions of alkenes with mCPBA, focusing on the stereochemical outcomes and the resulting products' separation in chromatography.", "specific_scope": "The context is the reaction of (E)-oct-4-ene and (Z)-oct-4-ene with mCPBA, followed by acid treatment, and how these reactions affect the number of observable peaks in standard and chiral HPLC.", "goal": "Determine the number of peaks observed in standard and chiral HPLC for the products of both experiments."}, "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 can open up to yield different products. The chemist will observe 2 peaks in standard HPLC due to the formation of two distinct products (the epoxide and the resulting diol) from both experiments. However, in chiral HPLC, the presence of stereoisomers will lead to 3 peaks, as the reaction of (E)- and (Z)-oct-4-ene produces different stereochemical outcomes. Thus, the correct observation is 2 peaks in standard HPLC and 3 peaks in chiral HPLC."}