The 1972 AP Chemistry free response questions are no longer officially available from the College Board, but I can try to help you with the answers based on my training data. Keep in mind that these answers may not be exactly what the original graders were looking for, but I'll do my best to provide accurate and helpful responses.
, specific worked answers for that year are often found in categorized worksheets rather than a single modern scoring guideline. chemmybear.com Below is the solution for the 1972 Free Response Question on Gas Laws
1972 AP Chemistry Free-Response section followed a different structure than modern exams, consisting of 18 questions with a total time of 110 minutes