ap09_frq_chemistry_formb.pdf

AP? Chemistry 2009 Free-Response Questions Form B The College Board The College Board is a not-for-profit membership association whose mission is to connect students to college success and opportunity. Founded in 1900, the association is composed of more than 5,600 schools, colleges, universities and other educational organizations. Each year, the College Board serves seven million students and their parents, 23,000 high schools and 3,800 colleges through major programs and services in college readiness, college admissions, guidance, assessment, financial aid, enrollment, and teaching and learning. Among its best-known programs are the SAT?, the PSAT/NMSQT? and the Advanced Placement Program? (AP?). The College Board is committed to the principles of excellence and equity, and that commitment is embodied in all of its programs, services, activities and concerns. ? 2009 The College Board. All rights reserved. College Board, Advanced Placement Program, AP, AP Central, SAT, and the acorn logo are registered trademarks of the College Board. PSAT/NMSQT is a registered trademark of the College Board and National Merit Scholarship Corporation. 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: . -2- GO ON TO THE NEXT PAGE. 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. -3- GO ON TO THE NEXT PAGE. 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 2+Hg 2e-+ ? Hg( )l 0.85 +Ag e-+ ? Ag( )s