ap12_frq_chemistry.pdfVIP

AP? Chemistry 2012 Free-Response Questions About the College Board The College Board is a mission-driven not-for-profit organization that connects students to college success and opportunity. Founded in 1900, the College Board was created to expand access to higher education. Today, the membership association is made up of more than 5,900 of the world’s leading educational institutions and is dedicated to promoting excellence and equity in education. Each year, the College Board helps more than seven million students prepare for a successful transition to college through programs and services in college readiness and college success — including the SAT? and the Advanced Placement Program?. The organization also serves the education community through research and advocacy on behalf of students, educators, and schools. ? 2012 The College Board. College Board, Advanced Placement Program, AP, AP Central, SAT, and the acorn logo are registered trademarks of the College Board. Admitted Class Evaluation Service and inspiring minds are trademarks owned by the College Board. All other products and services may be trademarks of their respective owners. Visit the College Board on the Web: . Permission to use copyrighted College Board materials may be requested online at: /inquiry/cbpermit.html. Visit the College Board on the Web: . AP Central is the official online home for the AP Program: . GO ON TO THE NEXT PAGE. -2- INFORMATION IN THE TABLE BELOW AND IN THE TABLES ON PAGES 3-5 MAY BE USEFUL IN ANSWERING THE QUESTIONS IN THIS SECTION OF THE EXAMINATION. GO ON TO THE NEXT PAGE. -3- STANDARD REDUCTION POTENTIALS IN AQUEOUS SOLUTION AT 25 C∞ Half-reaction (V)E∞ 2F ( ) 2g e -+ ? 2 F- 2.87 3+Co e-+ ? 2Co + 1.82 3+Au 3e-+ ? Au( )s 1.50 2Cl ( ) 2g e -+ ? 2Cl- 1.36 + 2O ( ) 4H 4g e -+ + ? 22H O( )l 1.23 2Br ( ) 2l e -+ ? 2 Br- 1.07 2+2Hg 2e-+ ? 2+2Hg 0.92