1. Ice melts at 0C° with an enthalpy of fusion = 6.01 kJ mol-1 . An...
1. Ice melts at 0C° with an enthalpy of fusion = 6.01 kJ mol-1 . An ice cube with a mass of 20.0g is placed inside an incubator at 40.0C°. Determine the total entropy change (in J/K) of this system.
2. Calculate the total entropy change (in J/K) when 50.0 g of H2 gas initially in a tank at a pressure of 145 psi is withdrawn from the tank under a constant pressure of 23.0 psi at standard room temperature. (S°,H2(g) = 130.68 J mol-1 K -1 ; recall that 1 bar = 14.5 psi)
3. Determine the free energy (in kJ/mol) for the decomposition of ammonia at 25.0 C° when the partial pressures are PN2 = 0.87 atm, PH2 = 0.25 atm and PNH3 = 12.9 atm, and ΔG°rxn = 33 kJ mol-1 .
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1. Ice melts at 0C° with an enthalpy of fusion = 6.01 kJ mol-1 .
An...
1. loe melts at 0C with an enthalpy of fusion -6.01 kJ mol". An ice cube...
1. loe melts at 0C with an enthalpy of fusion -6.01 kJ mol". An ice cube with a mass of 20.0g is placed inside an incubator at 40.0C°. Determine the total entropy change (in J/K) of this system.
Chapter 12, Question 11 Ice melts at 273.15 K with ΔHfus = 6.01 kJ/mol. An ice...
Chapter 12, Question 11 Ice melts at 273.15 K with ΔHfus = 6.01 kJ/mol. An ice cube of mass 34.4 g is dropped into a swimming pool, the temperature of which is held at 27.2°C. (a) What is the entropy change (ΔS) for melting the ice? ΔS = ------J/K (b) What is ΔS of the pool? ΔS = ------J/K (c) What is the overall ΔS? ΔS = ------J/K
Determine the free energy (in kJ/mol) for the decomposition of ammonia at 25.0 °C when the...
Determine the free energy (in kJ/mol) for the decomposition of ammonia at 25.0 °C when the partial pressures are PN2 = 0.87 atm, PH2 = 0.25 atm and PNH3 = 12.9 atm, and ΔG°rxn -1 =33.0kJmol . Calculate the vapor pressure (in Torr) of mercury under standard conditions. Use Appendix D to look up the required standard thermodynamic values. (Recall the pressure conversions: 1 atm = 1.01325 bar = 1.01325x105 Pa = 760 Torr) Benzene has a vapor pressure of...
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What is the entropy change to the surroundings when 1 mol of ice melts in someone's hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. -188 J/K b. -22.0 J/K c. -19.7 J/K d. +19.7 J/K e. +188 J/K
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm...
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction N2 (g) + 3H2(g) -------> 2NH3(g) the standard change in Gibbs free energy is ΔG° = -72.6 kJ/mol. What is ΔG for this reaction at 298 K when the partial pressures are PN2 = 0.200 atm PH2 = 0.350 atm PNH3 = 0.850
1.) NH4NO3(s) ↔ NH4+(aq) + NO3-(aq) +17 kJ/mol what is K at room temp? A)0.993 B)1.00...
1.) NH4NO3(s) ↔ NH4+(aq) + NO3-(aq) +17 kJ/mol what is K at room temp? A)0.993 B)1.00 C)1.05 x 10-3 D)954 2.) For the following reactions: 2NH3(g) 3H2(g) + N2(g) What is under the following conditions: T = 25oC PNH3 = 12.9 atm PH2 = 0.250 atm PN2 = 0.870 atm A) 33 kJ/mol B) 56 kJ/mol C) 10 kJ/mol D) 31 kJ/mol
What is the ΔrG for the following reaction (in kJ mol-1) at 298 K? N2 (g)...
What is the ΔrG for the following reaction (in kJ mol-1) at 298 K? N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g) The conditions for this reaction are: PN2 = 1.47 bar PH2 = 0.35 bar PNH3 = 1.45 bar
The enthalpy of fusion of H2O (s) (ice) if heat fusion= 6.01 kj mol-1. What mass...
The enthalpy of fusion of H2O (s) (ice) if heat fusion= 6.01 kj mol-1. What mass (ink) of ice can be melted with the heat released from the combustion of 1.00 gallon of octane? ( The temperature of the ice and resulting water remains constant at 0 degrees C through the melting process.) Please show work
The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is...
The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol ⋅ K. The conversion of 50.0 g of ice at 0.00 °C to liquid water at 5.00°C requires ________ kJ of heat.
Ethanol melts at 159K and boils at 351K. The enthalpy of fusion is 5.02 kJ/mol, the...
Ethanol melts at 159K and boils at 351K. The enthalpy of fusion is 5.02 kJ/mol, the enthalpy of vaporization is 35.56 kJ/mol, and the molar mass is 46.07 g/mol. The specific heats of solid ethanol is 0.97 J/g-K, for liquid ethanol it is 2.3 J/g-K, and for gaseous ethanol it is 1.9 J/g-K. How much heat (kJ) is needed to convert 215 g of liquid ethanol at 160 K to gaseous ethanol at 713 K?
1. loe melts at 0C with an enthalpy of fusion -6.01 kJ mol". An ice cube with a mass of 20.0g is placed inside an incubator at 40.0C°. Determine the total entropy change (in J/K) of this system.
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