Mixture ΔT NaCl + H2O -0.2  NaNO3 + H2O -0.9 NaCH3COO + H2O 0.9   Which reactions are endothermic? Which are exothermic? What is the sign of enthalpy ΔH in each case? What is the sign of change in Gibbs free energy ΔG for each process in the forward direction? Could you predict the sign for entropy ΔS for these reactions? How could you tell the sign?

Q: From the solutions above which ones are exothermic and which oness are endothermic? And what are the…

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Q: A salt has the form M2X3 where M is a metal cation and X is a nonmetal anion. If ΔG∘rxnΔGrxn∘ is…

A: ∆G=-RTlnKGiven,∆G=75.40 kJ/mol=75400 J/molT=25 °C=298 KR=8.314 J mol-1 K-1

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Q: A reaction is carried out at 25 °C with AHO = 20 kcal/mol and AS° = 25 cal/K-mol. (R: 8.314 J/K-mol…

A: Answer: This is the question based on the second law of thermodynamics.

Q: Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Refer to the AG°f…

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Q: DeltaH=21      T=21.2 degrees C   DeltaS= 0.071 Is the dissolution process studied today, NaNO3…

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Q: For which of these is there an increase in entropy?   KCl(aq)+AgNO3(aq)→KNO3(aq)+AgCl(s)…

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Q: A salt has the form M2X3 where M is a metal cation and X is a nonmetal anion. If ΔG∘rxnΔGrxn∘ is…

A:

Q: Predict whether the entropy change of the system in each of the following is positive or negative.…

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Q: Which of the following reactions results in a decrease in entropy? CaCO3 (s) CaO (s) + CO2 (g) N2O4…

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Q: For the oxidation of iron to form iron(III) oxide: 4Fe(s) + 3O2(g) ⟷⟷ 2Fe2O3(s)…

A: ΔSo = –549.73 J∙K–1 T = 298K ΔH = –824.2 kJ∙mol–1 = -824200 Jmol-1

Q: The standard enthalpy change for the following reaction is 433 kJ at 298 K. KClO4(s)---->  K(s) +…

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Q: N2(g) + O2(g) + Cl2(g) ---------> 2 NOCl(g)        ΔH° = 103  kJ What is the standard enthalpy…

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Q: Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Refer to the AG°f…

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Q: Does the entropy of the system increase or decrease for the following reactions? (1) Ba2*(aq) + SO4²…

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Q: Consider the reaction Ca(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l) for which H° = -30.20 kJ and S° =…

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Q: II.For each of the following reactions, indicate whether you would expect the entropy change of each…

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Q: A reaction is carried out at 25 °C with AH° = 20 kcal/mol and AS° = 25 cal/K-mol. (R : 8,314 J/K-mol…

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