3 moles of liquid water at 100\deg C and 1 atm go to the vapor phase at 160\deg C and 0.5 atm. Calculate \Delta H, \ Delta S, \Delta G, and \Delta A for the process. You can consider that the vapor behaves as an ideal gas. Data for water that you might need to solve the problem: Cpm_(vap) = 9 cal/(mol K); \Delta Hm_(vap) = 9360 cal/mol; S\deg298K Cpmvap=9 cal/(molK); AHmvap=9360 cal/mol; S°298K=16.72 cal/(molK)
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- The distance between downtown San Francisco and downtown Oakland is 9 miles. However, a car driving between the two points travels 12.3miles. Of these distances, which one is analogous to a state function? Why?An 8.20-mol sample of ideal gas, initially at 342.48 K and 19.27 atm, expands from 4.58 atm until the system reaches equilibrium. The gas has Cp=27.41+0.0697 x 10-2T. Calculate\Delta S(J/K) for the process .Consider the combustion of one mole of methane gas:CH4(gas) + 2O2(gas) --> CO2 (gas) + 2H2O(gas).The system is at standard temperature (298 K) and pressure (105 Pa) both before and after the reaction. 1.) First imagine the process of converting a mole of methane into its elemental consituents (graphite and hydrogen gas). Use the data at the back of this book to find ΔH for this process. 2.) Now imagine forming a mole of CO2 and two moles of water vapor from their elemental constituents. Determine ΔH for this process. Question: What is ΔH for the actual reaction in which methane and oxygen form carbon dioxide and water vapor directly? Explain.
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- 1.94 x 1024 molecules of an ideal gas with energy E = NKBT is subjected to a cyclic, quasi- static (i.e., reversible) process shown in the figure. What is the change in the entropy (in J/K) of the gas as it moves from state A to state D? B A D. 2 3 Volume (m³) Type your answer. Pressure (Pa) 2.For the reaction P4010(s) + 6 H20(1) 4 H3PO4(aq) AG° = -448.9 kJ and AS° = -16.3 J/K at 261 K and 1 atm. This reaction is (reactant, product) favored under standard conditions at 261 K. The standard enthalpy change for the reaction of 2.15 moles of P4010(s) at this temperature would be kJ. Submit Answer Try Another Version 1 item attempt remaining rch aThermo- Problem 4.23 At 298 K. AH; 131.28 kJ-mol for the reaction -1 with Cp.-8.53, 33.58, 29.12, and 28.82 J K mol for graphite, H₂O(g). CO(g), and H₂(g), respectively Part A Calculate AH; at 210 *C from this information. Assume that the heat capacities are independent of temperature. Express your answer to five significant figures and include the appropriate units. ΔΗ: (210 °C) - Submit Provide Feedback HÅ Value Request Answer Units C(graphite) + H₂O(g) → CO(g) + H₂(g)