CHEM 102

CHEM 102 Winter 12 Exam 2 (A) Questions and Answers Potentially useful information: First order half-life: t1/2 = ln2 / k [A]t = - kt + [A]o ln[A]t = - kt + ln[A]o 1/[A]t = kt +1/[A]o 1. Please choose the letter “a” as your answer for this question. 2. Which choice is an example of an amorphous solid? a. NaCl b. graphite c. iron d. diamond e. glass 3. Which choice is an example of an ionic solid? a. NaCl b. diamond c. iron d. quartz e. glass 4. In body-centered cubi...

CHEM 102 – Winter 18 Exam 2 Review Practice Problems 1) Which substance in the reaction below either appears or disappears the slowest? C2H4(g) + 3 O2(g)

CHEM 102 Winter 19 Final Exam (C) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “C” as your answe...

CHEM 102 Winter 07 Final Exam Questions and Answers Potentially useful information: x  pH  pKa 2 a  log base acid  ΔG° = ΔH° - T ΔS° ΔG = ΔG° + RT ln Q E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96480 C/mol e- 1. Volatility of a liquid increases as temperature increases because a. the molecules of the liquid decompose into lighter molecules. b. an equilibrium between liquid and vapor is established. c. the number of molecul...

CHEM 102 Winter 18 Final Exam (A) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “A” as your a...

Instructions: CHEM 102 General Chemistry I Spring 2015 Exam 3 -­‐ Version A Questions and Answers 1. Do NOT open this exam until you are told to do so. Opening the exam before the start of the exam is considered an act of Academic Dishonesty. 2. All answers must be bubbled into the scantron answer sheet. 3. No credit will be given for answers written on this exam. 4. You must use a #2 pencil to bubble in the answers on your scantron. 5. This is a multiple choice exam consistin...

CUNY Hunter College :CHEM 102: General Chemistry I Exam Final Exam Version A and B Instructions: 1. Do NOT open this exam until you are told to do so. Opening the exam before the start of the exam is considered an act of Academic Dishonesty. 2. All answers must be bubbled into the scantron answer sheet. 3. No credit will be given for answers written on this exam. 4. You must use a #2 pencil to bubble in the answers on your scantron. 5. This is a multiple-­‐choice exam cons...

CHEM 102 – Winter 18 Exam 2 Review Practice Problems 1) Which substance in the reaction below either appears or disappears the slowest? C2H4(g) + 3 O2(g)

CHEM 102 Winter 19 Final Exam (C) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “C” as your answe...

CHEM 102 Winter 18 Make-up Exam (B) Questions and Answers Potentially useful data: x  pH  pKa 2 a  log base acid  ΔG° = ΔH° – T ΔS° ΔG = ΔG° + RT ln Q ΔG° = – RT ln K R = 8.314 J mol-1 K-1 1. Please choose the letter “B” as your answer for this question. 2. Which of the following reactions has a negative S°? a) 2 H2 (g) + O2 (g)  2 H2O (g) b) BaF2 (s)  Ba2+ (aq) + 2 F (aq) c) CH3OH (aq)  CH3OH (l) ...