TEST #2Ch 141 Name_______________________Use the following if neccessary: Specific heat of water = 4.18 Joule/goC R = 0.0821 liter atm/mole K The universal gas constantPart I Multiple Choice. Four points each.1. T F At a given temperature and pressure, methane (CH4) gas will have a higher density than nitrogen (N2).2. How many moles of argon are in a 500 ml container of argon at a pressure of 150 torr and 22oC?a. 4.07x10-3 moles c. 0.0546 molesb. 41.5 moles d. 4.07 moles3. A 2.00 liter soda bottle is filled with air at 18oC and 1.00 atmospheres pressure. If the lid is screwed on and the temperature is raised to 2500C, what will the pressure be? (don't try this at home)a. 13.9 atm b. 1.8 atm c. 0.072 atm d. 0.56 atm4. Use the following reaction enthalpies in the problem below:ΔHrxn1. 3/2 O2(g)  O3(g) +143 kJ/mole 2. NO(g) + O(g)  NO2(g) -306 kJ/mole3. NO2(g) + O2(g)  NO3(g) + O(g) +196 kJ/moleWhat is the enthalpy of the reaction 2O3(g) + NO(g)  NO3(g) + 2 O2(g)?a. +33 kJ/mole c. +253 kJ/moleb. -253 kJ/mole d. -396 kJ/mole5. The heat of combustion of butane (C4H10) is 2879 kJ/mole. How much heat is produced byburning 25 kg of butane?a. 1.24x106 kJ c. 7.20x107 kJb. 7.20x104 kJ d. 1240 kJ6. Which process has a positive entropy change?a. 5.0 liters N2(g), 0oC  10.0 liters N2(g) , 0oCb. water/benzene mixture  separated water and benzenec. Fe(s), 100oC  Fe(s) 0oCd. phenol (l)  phenol (s)7. The reaction 2B(s) + 3H2(g)  B2H6(g), has an enthalpy change of ΔH = +36 kJ/mole. Therefore, the reaction is: (hint, determine the sign of ΔS from the moles of gas) a. spontaneous at all temperatures b. never spontaneous c. spontaneous at high enough temperatures d. spontaneous at low enough temperatures.8. T F The process CO2(g)  CO2(s) is exothermic.9. What is the pressure in the flask represented in the drawing below?a. 0.579 atm b. 0.988 atm c. 1.078 atm d. 1.486 atmPart II Short Answer. Four points each mostly.10. Give an example of a process which has a negative entropy change but which nevertheless isspontaneous. Be specific about the conditions under which it is spontaneous.11. Sketch graphs of both volume versus pressure and volume versus temperature in degrees centigrade for an ideal gas. (6 pts)12. A real gas has molecules which are attracted to one another. a. What does taking this fact into account do to a calculation of the pressure of a real gas compared to the pressure we would calculate for an ideal gas? (3 pts)b. Under what conditions (temp and/or pressure) is this factor particularly significant? Why? (4 pts)13. What is the difference between the concepts of heat capacity and of specific heat? You may want the mention in what situation each would be used. You may also want to mention units or even the concept of extensive vs intensive.14. Give both a definition and an example of a state function.Part III Solved problems. Show all your work for full or partial credit. Points as stated.15. Adding 5.00 g of lithium hydroxide solid to 120 ml of water initially at 22.35oC raises the temperature of the water to 30.35oC. What is the heat of solution of lithium hydroxide? (8 pts) (ignore the heat capacity of the container itself)16. If 34.5 g of aluminum at 100oC is added to 100 g of ethyl alcohol, initially at 18.0oC, the final temperature of the two is 27.2oC. Calculate the specific heat of ethyl alcohol. Assume that the specific heat of aluminum is 0.902 J/goC. (8 pts)17. For a system consisting of a gas in a cylinder with an initial volume of 10.0 liters and an external pressure of 1.0 atm, if a process occurred for which ΔE = +2000 J and 1200 Joules of heat was added to the system;a. What is W for the process? (3 pts)b. What would the final volume be (using 1 literatm = 101 Joules) (6 pts)18. Would 30 g of ice at -8oC completely melt in 100 ml of water initially at 30oC? (ex cr) Show your work, no credit for guessing the right answer. You can calculate heat of fusion of water from the tables provided.19. An unknown compound diffuses out of a container at the rate of 0.60 µg/min. At the same temperature and pressure, a sample of ethane gas (C2H6) diffuses out of the same device at a rate of 98 µg/min. What is the GMM of the unknown gas? (8 pts)20. When potassium chlorate is heated, it decomposes according to the equation below.2KClO3(s)  3O2(g) + 2KCl(s)a. What volume of oxygen will be collected at STP if 2.50 g of potassium chlorate is decomposed? (5 pts)b. What volume of oxygen will be collected over water at 29oC at a pressure of 739 torr if 5.62 g of potassium chlorate is decomposed? (5 pts)21. In a calorimeter with a heat capacity of 806 J/0C containing 765 ml of water initially at 22.8 0C, if one burns 2.09 g of gaseous silane (SiH4) in an excess of oxygen at constant pressure, producing solid silicon dioxide (quartz) and liquid water as a product, what will the final temperature inside the calorimeter? (10 pts)22. Using the bond energies provided, calculate the approximate heat of reaction for thechemical reaction represented below: (6 pts)23. A 690 ml flask contains a mixture of helium and neon at 300 0C and 1.50 atm. If the flask contains 0.14 g of neon, calculate the partial pressure of helium and the mole fraction of neon. (ex