2002 AP Chemistry Exam-1 - CHEMISTRY SECTION I TIME1 hour...

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CHEMISTRY SECTION I TIME––1 hour and 30 minutes NO CALUCLATOR MAY BE USED WITH SECTION I. Note: For all questions, assume that the temperature is 298 K, the pressure 1.00 atmosphere, and solutions are aqueous unless other specified. Throughout the test the following symbols have the definitions specified unless otherwise noted. T = Temperature L, mL = liter(s), milliliter(s) P = pressure g = gram(s) V = volume nm = nanometer(s) S = entropy atm = atmosphere(s) H = enthalpy Mm Hg = millimeters of mercury G = Gibbs free energy J, kJ = joule(s), kilojoules(s) R = molar gas constant V = volt(s) N = number of moles mol = mole(s) M = molar M = molal Part A Directions: Each set of lettered choices below refers to the numbered statements immediately following it. Select the one lettered choice that best fits each statement and then fill in the corresponding oval on the answer sheet. A choice may be used once, more than once, or not at all in each set. 1. The atom that contains exactly two unpaired electrons 2. The atom that contains only one electron in the highest occupied energy sublevel Copyright 2002 by College Entrance Examination Board, Princeton, NJ. All rights reserved. For face-to-face teaching purposes, classroom teachers are permitted to reproduce the questions. Web or Mass distribution prohibited.
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Questions 3-5 refer to the following molecules. (A) CO 2 (B) H 2 0 (C) CH 4 (D) C 2 H 4 (E) PH 3 3. The molecule with only one double bond 4. The molecule with the largest dipole moment 5. The molecule that has trigonal pyramidal geometry Questions 6-7 refer to the following solid compounds. (A) PbSO 4 (B) CuO (C) KMnO 4 (D) KC1 (E) FeCl 3 6. Is purple in aqueous solution 7. Is white and very soluble in water Questions 8-10 refer to the following gases at 0ºC and 1 atm. (A) Ne (B) Xe (C) O 2 (D) CO (E) NO 8. Has an average atomic or molecular speed closest to that of N 2 molecules at 0ºC and 1 atm 9. Has the greatest density 10. Has the greatest rate of effusion through a pinhole
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Questions 11-14 refer to the reactions represented below. (A) H 2 SeO 4 (aq) + 2 Cl - (aq) + 2 H + (aq) → H 2 SeO 3 (aq) + Cl 2 (g) + H 2 O( l ) (B) S 8 (s) + 8 O 2 (g) → 8 SO 2 (g) (C) 3 Br 2 (aq) + 6 OH - (aq) → 5 Br - (aq) + BrO 3 - (aq) 3 H 2 O( l ) (D) Ca 2+ (aq) + SO 4 2- (aq) → CaSO 4 (s) (E) PtCl 4 (s) + 2 Cl - (aq)→ PtCl 6 2- (aq) 11. A precipitation reaction 12. A reaction that produces a coordination complex 13. A reaction in which the same reactant undergoes both oxidation and reduction 14. A combustion reaction Questions 15-16 relate to the graph below. The graph shows the temperature of a pure substance as it is heated at a constant rate in an open vessel at 1.0 atm pressure. The substance changes from the solid to the liquid to gas phase. 15. The substance is at its normal freezing point at time
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2002 AP Chemistry Exam-1 - CHEMISTRY SECTION I TIME1 hour...

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