110_Fa11_FNL-A

110_Fa11_FNL-A - CHEMISTRY 110 EXAM 4 DECEMBER 12, 2011...

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Unformatted text preview: CHEMISTRY 110 EXAM 4 DECEMBER 12, 2011 FORM A ---------------------------------------------------------------------------------------------------------------- 1. Mixing solutions of HCl (aq) and AgNO 3 (aq) produces an insoluble salt. Which of the following is the correct list of spectator ions for this reaction? A. Ag + , NO 3 B. H + , Cl , Ag + , NO 3 C. Ag + , Cl D. H + , Cl E. H + , NO 3 ---------------------------------------------------------------------------------------------------------------- 2. Given the following: 2 NO (g) + 2 H 2 (g) N 2 (g) + 2 H 2 O (g) K c = 6.5 ! 10 2 What is the K c for the reaction below? Assume both reactions occur at the same temperature. 2 N 2 (g) + 4 H 2 O (g) 4 NO (g) + 4 H 2 (g) K c = ??? A. 1.54 ! 10 3 B. 7.69 ! 10 4 C. 2.55 ! 10 1 D. 3.07 ! 10 3 E. 2.37 ! 10 6---------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------- 3. For the following reaction, what is the reducing agent? 18 H + (aq) + 6 MnO 4 (aq) + 5 I (aq) " 6 Mn 2+ (aq) + 5 IO 3 (aq) + 9 H 2 O ( ! ) A. MnO 4 (aq) B. I (aq) C. IO 3 (aq) D. H + (aq) E. Mn 2+ (aq) ---------------------------------------------------------------------------------------------------------------- 4. Which of the following formula-name combinations is(are) correct ? i. NH 4 Cl 2 ammonium chloride ii. K 2 CO 3 potassium carbonate iii. Ca 3 (PO 4 ) 2 calcium phosphate A. i only B. ii only C. iii only D. i and iii only E. ii and iii only ---------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------- 5. What is the maximum number of electrons with m ! = 1 in the ground state of Br? A. 1 B. 2 C. 4 D. 6 E. 8 ---------------------------------------------------------------------------------------------------------------- 6. What is the solubility for helium in water at 30 C, if its partial pressure above the solution is 350 torr? The solubility constant for helium in water at this temperature is 3.7 ! 10 4 M/atm A. 1.7 ! 10 4 M B. 3.4 ! 10 4 M C. 5.6 ! 10 4 M D. 6.0 ! 10 4 M E. 9.0 ! 10 4 M ---------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------- 7. If a selenium atom is in its ground state, which orbital has an unpaired electron?...
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110_Fa11_FNL-A - CHEMISTRY 110 EXAM 4 DECEMBER 12, 2011...

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