Name: ________________________ Class: ___________________ Date: __________ Form: A2Quiz 2Multiple ChoiceIdentify the choice that best completes the statement or answers the question.Record the test form letter in the TEST FORM box on your ParSCORE form.Record your name on the top of this exam and on the scantron form.Be sure to fill out your perm ID# on your scantron correctly. Record all of your answers on the scantron form. 1. (2 points) Which of the following statements is/are CORRECT?1. Product concentrations appear in the numerator of an equilibrium constant expression.2. A reaction favors the formation of products if K >> 1.3. For a chemical system at equilibrium, the forward and reverse rates of reaction are equal.a. 1 onlyb. 2 onlyc. 3 onlyd. 1 and 2e. 1, 2, and 3 2. (3 points) If the density of N2 gas in a flask is 0.243 g/L at 18 °C, what is the pressure of nitrogen in the flask if it is heated to 36 °C? a. 0.258 atmb. 0.220 atmc. 0.486 atmd. 0.414 atme. 0.207 atm 3. (2 points) A mixture of He and CO2 is placed in a 7.50 L flask at 22 °C. The partial pressure of the He is 2.2 atm and the partial pressure of the CO2 is 1.9 atm. What is the mole fraction of He?a. 0.463b. 0.537c. 0.864d. 0.682e. 0.136Name: ________________________ Form: A2 4. (2 points) Place the following gases in order of increasing average velocity at 300 K: CO, Ne, O2, and N2O.a. CO = Ne = O2 = N2Ob. N2O < O2 < CO < Nec. O2 < N2O < Ne < COd. Ne < CO < O2 < N2Oe. CO < O2 < N2O < Ne 5. (2 points) If a gas effuses 2.165 times faster than Xe, what is its molar mass?a. 12.94 g/molb. 32.00 g/molc. 28.01 g/mold. 284.3 g/mole. 60.65 g/mol 6. (2 points) Which gas, He or H2O vapor, has the lower value of a in the van der Waals equation?a. The two gases have the same value of a.b. H2Oc. It depends on the conditions of pressure and temperature.d. He 7. (3 points) Water can be decomposed by electrolysis into hydrogen gas and oxygen gas. What mass of water must decompose to fill a 5.00 L flask to a total pressure of 2.50 atm at 298 K 2 H2O(™) → 2 H2(g) + O2(g)a. 6.14 gb. 35.3 gc. 9.21 gd. 23.5 ge. 13.8 gName: ________________________ Form: A3 8. (2 points) What volume of oxygen will react with 18 mL of acetylene (C2H2), assuming the gases are present at the same temperature and pressure? 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)a. 18 mLb. 36 mLc. 9.0 mLd. 7.2 mLe. 45 mL 9. (2 points) Non-ideal behavior for a gas is most likely to be observed under conditions ofa. low temperature and low pressure.b. low temperature and high pressure.c. high temperature and high pressure.d. standard temperature and pressure.e. high temperature and low pressure.ID: A1Quiz 2Answer SectionMULTIPLE CHOICE 1. ANS: E PTS: 2 2. ANS: B PTS: 3 3. ANS: B PTS: 2 4. ANS: B PTS: 2 5. ANS: C PTS: 2 6. ANS: D PTS: 2 7. ANS: A PTS: 3 8. ANS: E PTS: 2 9. ANS: B PTS:
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