CH110-120 Midterm 1 Information and Practice 2010

# CH110-120 Midterm 1 Information and Practice 2010 -...

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CH110/120 Midterm 1 Review General Information Midterm 1 will take place on Friday, Oct. 15, from 5:30 pm to 7:00 pm Section A: BA201 Section B: BA101 (last names A-K) Section B: BA102 (last names L-Z) Bring the following: pens , pencil s, and a calculator . Note: You will need a pencil to fill in the answer cards for the multiple choice questions. A periodic table and information sheet with necessary data and formulas will be provided with the exam. The midterm will cover material from all of Chapters 1 and 2. The format will include multiple choice (approximately 20 at 1 mark each) and two problems worth approximately 5 marks each. (Part marks will be assigned for problems, so show your work clearly and legibly.) The best way to study is to do practice problems and review the examples we have done in class (suggested problems from the book, plus others that reflect what we have covered in lecture). The following formulas and constants will be provided (and a periodic table): Formulas and constants: T A A p X p nRT pV = = A kinetic kinetic N RT E mv E 2 3 2 2 1 = = 2 / 1 3 = MM RT v 1 2 2 1 MM MM v v = N A =6.022x10 23 particles/mol R= 0.08314 L bar mol -1 K -1 R= 8.314 L kPa mol -1 K -1 R= 8.314 J mol -1 K -1 1 atm = 1.01325 bar = 1.01x10 5 Pa = 760 mm Hg

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I. Multiple Choice Questions: (See also practice quizzes on WileyPlus) The mass spectrum of chlorine atoms, which have two isotopes 37 Cl and 35 Cl, is shown below: mass number, A intensity 30 35 40 A= 37 What is the best estimate of the % abundance of 37 Cl and 35 Cl in this sample? a. 85% 35 Cl and 15 % 37 Cl b. 60% 35 Cl and 40% 37 Cl c. 75% 35 Cl and 25 % 37 Cl d. 67% 37 Cl and 33 % 35 Cl e. 50% 35 Cl and 50 % 37 Cl Adipic acid, whose line structure is shown below, is used in the manufacture of nylon used in carpet fiber, among other things. O HO O OH What is the chemical formula for adipic acid? a. C 4 H 2 O 4 b. C 6 H 2 O 4 c. C 6 H 6 O 4 d. C 6 H 8 O 4 e. C 6 H 10 O 4 Nitric acid is a corrosive acid capable of dissolving many metals, with the evolution of brown nitrogen dioxide gas as a byproduct. It is often sold as concentrated nitric acid which has [HNO 3 ] = 16. M. A common concentration used in the laboratory is 6.0 M HNO 3 . If you need 20. L of 6.0 M HNO 3 , what volume of concentrated nitric acid is required? a.
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CH110-120 Midterm 1 Information and Practice 2010 -...

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