Chemistry 121 Fall 2006 Oregon State UniversityExam 2 November 16, 2006 Dr. Richard NafshunInstructions: You should have with you several number two pencils, an eraser, your 3" x 5" note card, a calculator, and your University ID Card. If you have notes with you, place them in a sealed backpack and place the backpack OUT OF SIGHT or place the notes directly on the table at the front of the room. Fill in the front page of the Scantron answer sheet with your test form number (listed above), last name, first name, middle initial, and student identification number. Leave the class section number and the test form number blank.This exam consists of 25 multiple-choice questions. Each question has four points associated with it. Select the best multiple-choice answer by filling in the corresponding circle on the rear page of the answer sheet. If you have any questions before the exam, please ask. If you have any questions during the exam, please ask the proctor. Open and start this exam when instructed. When finished, place your Scantron form and note card in the appropriate stacks. You may keep the exam packet, so please show your work and mark the answers you selected on it.Abbreviated Solubility Rules:Rule 1:All nitrates, group 1A metal salts and ammonium salts are soluble.Rule 2:All carbonates, hydroxides, phosphates and sulfides are insoluble.Rule 3:Rule 1 always takes precedent.R = 0.0821 KmolatmL--R = 8.314 Kmolsmkg---22MassMolarRTrms3PV = nRT 760 Torr = 1 atm = 760 mm Hg K = 273.15 + °C1 mole = 6.02 x 102322221111TnVPTnVPmilli (m) = 1/1000kilo (k) = 1000M1V1 = M2V2MacidVacid = MbaseVbaseHydroxide OH-Cyanide CN-Nitrate NO3-Acetate CH3COO-Carbonate CO32-Phosphate PO43-Hydronium H3O+Ammonium NH4+Sulfate SO42-Periodic Tableof theElements Here1. 2.50 L of 2.00 M NaCl (aq) is diluted to 4.00 L. What is the molarity of the resulting solution?(A) 0.200 M(B) 5.00 M(C) 20.0 M(D) 0.800 M(E) 1.25 M2. A student obtains two solutions. One is 1.00 L of 0.100 M HCl (aq).The other is 1.00 L of 0.100 M CH3CH2COOH (aq).Which solution contains the most H+ ions?(A) 1.00 L of 0.100 M HCl (aq)(B) 1.00 L of 0.100 M CH3CH2COOH (aq)3. A student obtains a 25.00 mL sample of HCl (aq). He titrates it with 0.1000 M NaOH (aq) and finds 36.56 mL are required to reach the equivalence point. The concentration of HCl (aq) is:(A) 0.1462 M(B) 6.838 M(C) 0.06838 M(D) 14.62 M(E) 91.40 M4. Which of the following lists contains only acids?(A) NaOH, KOH, NH4OH, Ca(OH)2(B) H2SO4, HNO3, HCl, NH3(C) HNO3, CH3COOH, CH3CH2COOH(D) HNO3, NaNO3, HCl, NaCl5. In an excess amount of oxygen, how many grams of CO2 (g) are theoretically produced from the combustion of 901.0 g of glucose [C6H12O6 (s), molar mass of 180.2 g/mol]?C6H12O6 (s) + 6 O2 (g)  6 CO2 (g) + 6 H2O (g)(A) 108.1 g CO2 (g) are produced(B) 220.1 g CO2 (g) are produced(C) 264.1 g CO2 (g) are produced(D) 1320 g CO2 (g) are produced(E) 4860 g CO2 (g) are produced6. A student calculates that 21.05 grams of lithium fluoride should theoretically be produced duringa process. She actually recovers 18.71 grams of lithium fluoride. What is the percent yield for this process?(A) 92.34 %(B) 112.5 %(C) 2.340 %(D) 88.88 %(E) 1.125 %7. A student dissolves two moles of Ca(NO3)2 into a beaker of water. How many nitrate ions are present in the solution?(A) There are one mole nitrate ions in the beaker.(B) There are two moles nitrate ions in the beaker.(C) There are four moles nitrate ions in the beaker.(D) There are eight moles nitrate ions in the beaker.(E) There are six moles nitrate ions in the beaker.8. A student obtains a 1.038 liter neon light bulb that contains 2.018 grams of neon gas at 298 K. The pressure inside the bulb is:(A) 0.424 atm(B) 47.6 atm(C) 22.4 atm(D) 2.36 atm(E) 0.624 atm9. A student inflates a balloon to 3.58 liters at 28.6 ºC and 1.02 atm. The student seals the balloon which contains expired air [74% N2 (g); 16% O2 (g); 4% CO2 (g); 5% H2O (g); 1% trace gases]. The student cools the balloon to 2.09 ºC. Which of the following is true?(A) The gases inside the balloon are traveling slower at the lower temperature than at the higher temperature; the volume of the balloon is smaller at the lower temperature than at the higher temperature; the number of moles of gas present inside the balloon at the lowertemperature is the same as at the higher temperature; the pressure inside the balloon at thelower temperature is the same as at the higher temperature.(B) The gases inside the balloon are traveling at the same velocity at the lower temperature asat the higher temperature; the volume of the balloon is smaller at the lower temperature than at the higher temperature; the number of moles of gas present inside the balloon at the lower temperature is the same as at the higher temperature; the pressure inside the balloon at the lower temperature is the same as at the higher temperature.(C) The gases inside the balloon are traveling slower at the lower temperature than at the higher temperature; the volume of the balloon is the same at the lower temperature as at the higher temperature; the number of moles of gas present inside the balloon at the lowertemperature is the same as at the higher temperature; the pressure inside the balloon at thelower temperature is the same as at the higher temperature.(D) The gases inside the balloon are traveling slower at the lower temperature than at the higher temperature; the volume of the balloon is smaller at the lower temperature than at the higher temperature; the number of moles of gas present inside the balloon at the lowertemperature is the same as at the higher temperature; the pressure inside the balloon at thelower temperature is smaller than at the higher temperature.(E) The gases inside the balloon are traveling slower at the lower temperature than at the higher temperature; the volume of the balloon is smaller at the lower temperature than at the higher temperature; the number of moles of gas present inside the balloon at the lowertemperature is less than at the higher temperature; the pressure inside the balloon at the lower temperature is the same as at the higher temperature.10. A student places 59.5 g of a gas into a 10.0-L container at 298 K and measures the pressure to be 2.053 atm. This gas is:(A) O2 (g)(B) N2 (g)(C) Cl2 (g)(D) H2 (g)(E) He (g)11. A student obtains a 5.00 liter sealed Thermos bottle at 304.2 K and 748