{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Reactions \u2192 Nucleophilic Addition and Hydrolysis", "refinement": "This problem involves identifying suitable reagents for specific organic transformations, including the addition of cyanide to a ketone and the hydrolysis of a nitrile to a carboxylic acid.", "specific_scope": "The first reaction involves the conversion of butan-2-one to a nitrile derivative, while the second reaction involves the hydrolysis of that nitrile derivative to form a carboxylic acid.", "goal": "Select the correct reagents (A and B) that facilitate the specified transformations in the reactions."}, "summary": "This problem requires selecting appropriate reagents for two organic reactions: the first involves the nucleophilic addition of cyanide to butan-2-one to form a nitrile derivative, and the second involves the hydrolysis of that nitrile to produce a carboxylic acid. The task is to identify which pair of reagents (A and B) from the given candidates will successfully carry out these transformations. Understanding the roles of the reagents in these reactions is crucial for determining the correct answer."}