CHEM 1A midterm 1 key
Subject:
Chemistry [1]
Tags:
Chemistry [2]
Bases [4]
Acids [5]
Smoking [6]
Nicotine [9]
Tannic acid [10]
Caffeine [11]
PH [12]
Buffer solution [13]
health [14]
Chemistry 1A, Fall 2011 Midterm Exam #2 October 18, 2011 (90 min, closed book) Name:__________________________________ SID:___________________________________ GSI Name:________________ ? The test consists of 4 short answer questions and 23 multiple choice questions. ? Put your written answers in the boxes provided. Answers outside the boxes will NOT be considered in grading. ? Write your name on every page of the exam. Question Page Points Score Multiple Choice 2-8 76 Cabbage juice 2 6 Kitty Litter 3 6 Nicotine 6 4 Caffeine 8 8 Total 100 Useful Equations and Constants: pH = - log[H+] pX = - log X X = 10-pX Kw = 1?10-14 at 25?C PV = nRT ][ ][ log HA A pKpH a ?