Review Sheet Chapters 2-10

Review Sheet Chapters 2-10 - Name CH 141/Review Sheet/Fall...

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Name____________________________________ CH 141/Review Sheet/Fall 2010 Each Question is Worth 1 Points. There is a total of 45Points on the Review Sheet for Quiz Grade. Please answer questions using a Blue Scantron – Otherwise it will NOT be graded. Basic Chemistry Concepts 1. Identify the atom or ion with a mass number of 16, 8 protons, 8 neutrons, and 10 electrons. a. S 2+ b. O c. O 2- d. O 2+ 2. The formula for aluminum hydroxide is a. AlOH b. Al 3 OH c. Al 2 (OH) 3 d. Al(OH) 3 Stoichiometry 3. What is the empirical formula of a compound that is 49.4% K, 20.3% S, and 30.3% O? a) KSO 2 b) KSO 3 c) K 2 SO 4 d) K 2 SO 3 4. Using the balanced equation shown below, calculate the number of grams of H 2 O that would be produced by the complete reaction of 5.0 g of O 2 2H 2 (g) + O 2 (g) 2H 2 O(l) a) 5.6 b) 2.8 c) 2.3 X 10 2 d) 0.31 5. What is the molarity of CH 3 OH in a solution prepared by dissolving 11.7 g of CH 3 OH in 230 mL of solution? a) 11.9 M b) 1.59 X 10 -3 M c) 0.0841 M d) 1.59 M 6. A 17.5 mL sample of H 2 SO 4 (aq) required 29.6 mL of 0.250 M NaOH to neutralize it. Calculate the molarity of the HCl solution. a. 0.15 M b. 0.42 M c. 0.84 M d. 6.8 M 7. The balanced net ionic equation for precipitation of AgI when aqueous solutions of AgNO 3 and NaI are mixed is a) Ag + (aq) + I - (aq) ------> AgI(s) b) Ag + (aq) + NO 3 - (aq) ------> AgNO 3 (s) c) Ag + (aq) + NO 3 - (aq) ------> AgNO 3 (aq) d) AgNO 3 (aq) + NaI(aq) -------> AgI(s) + NaNO 3 (aq) e) AgNO 3 (aq) + NaI(aq) ------> AgI(aq) + NaNO 3 (s) 8. What is the oxidation number for Mn in KMnO 4 ? a) 1 b) 3 c) 5 d) 7 Thermochemistry 9. According to the first law of thermodynamics a) all spontaneous processes are accompanied by an increase in disorder b) energy is conserved during any process c) the entropy of a pure, crystalline substance at absolute zero is zero d) the amount of work done during a change is independent of the pathway of that change 10. When 72 g of a metal at 97.0°C is added to 100 g of water at 25.0°C, the final temperature is found to be 29.1°C. What is the heat capacity per gram of the metal? (Heat capacity of H 2 O = 4.184 J/g·°C) a) 0.46 J/g. °C b) 2.8 J/g. °C c) 0.35 J/g. °C d) 2.0 J/g. °C 11. The value of H° for the following reaction is -482 kJ. Determine the amount of heat (in kJ) exchanged
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This note was uploaded on 02/15/2011 for the course CHEM 141 taught by Professor Milner,e during the Fall '08 term at Jackson State.

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Review Sheet Chapters 2-10 - Name CH 141/Review Sheet/Fall...

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