Predict the sign of the free energy change of the system for each of the following phase changes (Note that "1" means positive, "-1" means negative, and "0" means ≈0): (1) Melting of A(s) at -57.9 °C and 1 atm pressure given that at 1 atm pressure, A(s) melts at 183.7 K. (2) Vaporization of B(l) at -94 °C and 1 atm pressure given that at 1 atm pressure, B(l) vaporizes at -92.2 °C. (3) Sublimation of C(s) at 134.3 K and 1 atm pressure given that at 1 atm pressure, C(s) sublimes at 135.4 K

Q: a) Calculate AGxn for the reaction (AHrxn=572 kJ; ASrxn° = 179 J/K).

A: We know ∆Gorxn = ∆Hrxno - T∆Srxno . For a reaction to be spontaneous ∆G should be -ve . At…

Q: Using the relevant Sº values, calculate AS°. 298 (a) N₂(g) + 2O₂(g) → 2 NO₂(g) -121.3 (J/mol.K) (b)…

A: Answer:

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Q: .

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Q: For magnesium, Mg, the heat of fusion at its normal melting point of 649 °C is 9.0 kJ/mol. The…

A: Ans Heat of fusion is the amount of heat added when one mole of solid convert to the liquid. Heat of…

Q: Which reaction is spontaneous at SATP? AH=41.5 kJ, AS=-12.9 J/K AH=8.75 kJ, AS=21.2 J/K AH=24.9 kJ,…

A:

Q: Given that ΔG0f  for SF6 = -1105 kj/mol, and  ΔG0reaction = -374 kj/mol, what is ΔG0f  for SF4 in…

A: Given:  ΔG0f for  SF6 = -1105 kJ/mol ΔG0f for  F2 = 0 kJ/mol ΔG0reaction = -374 kJ/mol

Q: a) How much energy is needed to warm a 50.g ice cube at -15oC up to gas vapor at 115oC (all at…

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Q: 2) Consider the following reaction at constant pressure. Use the information here to determine the…

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A: Dissolution of ammonium nitrate in water is given by, NH4NO3(s)→H2O(l) NH4+(aq)+NO3-(aq)   ∆H=+25.09…

Q: 1. Consider the freezing of liquid water at - 10°C and 1 atm. For this process, what are the signs…

A: Freezing of water at -10℃ and 1 atm, H2O (l) ⇌ H2O (s)

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Q: Calculate the enthalpy of vaporization of water at its normal boiling point. ΔS° [H2O()] = 69.9…

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Q: Given these values, ΔHorxn = +75 kJ; ΔSorxn = +120 J/K; T = 298 K; calculatethe free energy change…

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A: Part a)   Part b)  Part c)   Part d)

Q: 6) Calculate AS rxn for the following reactionat 298 K. The Sº for each species is shown below the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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Q: Consider the reaction 2 NO2(g)  N2O4(g) . (a) Using Gf N2O4(g) = 97.79 kJ/mol and Gf NO2(g) = 51.3…

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Q: The relevant thermodynamic data, under standard conditions, for the reaction H2(g) + ½O2(g) → H2O(g)…

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Q: For a certain chemical reaction, ∆H° = -35.4 kJ and ∆S° = -85.5 J>K. (a) Is the reaction…

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Q: The temperature

A: we know the thermodynamic equation:                               ∆G°=∆H° - T∆S°…

Q: if : Mg (g) Mg (s)  1.) What is DGrxn, when you use DGrxn  = DHrxn  –  TDSrxn, at the…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…