By: AP Curriculum Historian
Because these older exams are "legacy," they are often found in specialized teacher archives rather than on the modern AP Central website. Notable repositories include: College Board ChemmyBear (Harvey Gendreau Archive) 1972 ap chemistry free response answers
The 1972 AP Chemistry Free-Response section featured several classic problems covering stoichiometry, thermodynamics, and acid-base chemistry. Below are detailed solutions and explanations for the primary questions released from that year. 1. Stoichiometry and Gas Laws (Acid-Base Mixture) Question Summary: A 5.00g sample mixture of KOHcap K cap O cap H KClcap K cap C l is reacted with 0.100L0.100 cap L 2.00M2.00 cap M HClcap H cap C l . The reaction produces 249mL249 m cap L CO2cap C cap O sub 2 740torr740 t o r r ). The excess HClcap H cap C l is titrated with 86.6mL86.6 m cap L 1.50M1.50 cap M NaOHcap N a cap O cap H Part A: Percentage of in the mixture Find moles of CO2cap C cap O sub 2 : Use . Convert units: CO2cap C cap O sub 2 Find mass of : From the balanced equation The Hunt for 1972 AP Chemistry Free Response
Question 3
precipitated and electrical conductivity—to the structural formulas of three different isomers: violet, light green, and dark green. The excess HClcap H cap C l is titrated with 86
Typical Prompts: Write balanced net ionic equations for the following:
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