The standard entropies at 298 K for certain group 4A elementsare: C(s, diamond) = 2.43 J/mol-K, Si1s2 = 18.81 J/mol-K, Ge1s2 = 31.09 J/mol-K, and Sn1s2 = 51.818 J/mol-K. All but Sn have the same (diamond) structure. Howdo you account for the trend in the S° values?

Q: 19.65 A particular constant-pressure reaction is barely sponta- neous at 320 K. The enthalpy change…

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Q: Consider the reaction Fe(s) + 2HCl(aq) → FeCl2 (s) + H₂(g) for which AH° = -7.400 kJ and AS° = 107.9…

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Q: 5.The following describes the process occurring spontaneously if the system is a hotter object…

A: 5) Given : System is a hotter object. Since the system is a hotter object. Hence the temperature of…

Q: Ca(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l) for which H° = -30.20 kJ and S° = 205.9 J/K at 298.15 K.…

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Q: Fe(s) + 2HCI(aq)→FeCl2(s) + H2(g) for which AH° = -7.400 kJ and AS° = 107.9 J/K at 298.15 K. (1)…

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Q: Consider the reaction N2(g) + 2H,O(1)–→2NO(g) + 2H2(g) for which AH° = 752.2 kJ and AS° = 351.6 J/K…

A: The detailed question had been solved on white sheets of paper attached below.  Here it is important…

Q: For the reaction CaCO3(s) CaO(s) + CO2(g) AG° = 136 kJ and AH = 178 kJ at 259 K and 1 atm. This…

A: To find the entropy change (Delta S) for the reaction, we can use the relationship between the Gibbs…

Q: A 0.495M solution of nitrous acid, HNO2, has a pH of 1.83. Calculate the value of Ka for nitrous…

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Q: Question 12 A The fluorination of ammonia is Based on the information, whi AG n > 0 ai phase…

A: Standard Gibbs free energy of the reaction is equal to the difference of the sum of Standard Gibbs…

Q: Determine the change in the entropy of the surroundings in J K1 mol 1 during VAPORIZATION of a…

A: The given reaction is : Temperature = 298 K Heat of vaporization = 14.0 kJ/mol Entropy of…

Q: The entropy of a spontaneous reaction between the NH3 and HCI gases is -284 J K ¹ mol'¹ at room…

A: The negative change in entropy (-284 J K⁻¹ mol⁻¹) for the reaction between NH₃(g) and HCl(g) does…

Q: Consider the reaction Co(g) + H20(1)–→CO2(g) + H2(g) for which AH° = 2.800 kJ and AS° = 76.80 J/K at…

A: Given ∆Ssys = 76.80 J/K Temperature, T = 298.15 K Enthalpy change,  ∆H = 2.800 kJ * (1000 J/1 kJ) =…

Q: Consider the reaction: 1-g 6CO2(g) + 6H,O(0→C,H12O6+602(g) Using standard thermodynamic data at…

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Q: Calculate ΔH° for the process Sb(s) + 5 2 Cl2 (g) ⟶ SbCl5 (s) from the following information: Sb(s)…

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Q: Calculate the value of delta G at 225 °C and 1 atm for the reaction below,   2O3 +3I2 => 6IO…

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Q: Calculate ΔEΔE, if q=q= 0.768 kJkJ and w=w= -880 JJ

A: We have given that q = 0.768KJ W = -880J = -0.880KJ ∆E = ?  So According to first law of…

Q: Determine AS univ in J K mol-1 for the formation reaction of one mole of liquid hydrazine (N₂H4) at…

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Q: Processes are always spontaneous when (H and S refer to the system.) AH 0 ΔΗ> 0 and ΔS0 and ΔS> 0…

A: The correct answer is explained below.

Q: X After 2.00 × 10² g of gold (Cp,s = 0.131 J g-¹ K-¹) at 120.0 °C is dropped into 25.0 g of water…

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Q: Ca2"(ag) + 2 F(aq) O 37.3 kJ mor he following standard enthalpy and entropy of reaction: IkJ mor…

A: Change in gibbs free energy of a process can be calculated as :

Q: For a chemical reaction the equilibrium constant was found to be K = 1.4 × 10–8 at T = 298.15 K, and…

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Q: 5-entro Consider the reaction 2CO2(g) + 5H2(g)- →C;H½(g) + 4H,O(g) for which AH° = 46.50 kJ and AS°…

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Q: Consider the reaction SO₂(g) + 2C(s.graphite) S(s,rhombic) + 2CO(g) for which AH = 75.80 kJ and AS =…

A: The question is based on the concept of chemical thermodynamics. we need to calculate entropy change…

Q: 72. The standard free energies of formation and the standard enthalpies of formation at 298 K for…

A: Interpretation: The reaction corresponding to the formation of C2F2. The values of ΔS˚ and K at the…

Q: C,H12O6(s) + 6 02(g) 6 CO2(g) + 6 H,0(g) AS, +900. J/(moln · K) %3D Substance Approximate S (J/(mol…

A: Standard entropy change of the reaction is equal to the difference in the standard entropy of the…

Q: Consider the reaction Fe₂O3(s) + 2Al(s) Al2O3(s) + 2Fe(s) for which AH = -851.5 kJ and AS° = -37.00…

A: Given , Reaction : Fe2O3(s) +2Al(s)→Al2O3(s) +2Fe(s) ∆H°=-851.5 kJ∆S°=-37.00JKTemperature, T =…

Q: Glacial acetic acid is the concentrated form of acetic acid, the acid in vinegar. The term "glacial"…

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Q: Find the minimum temperatures at which reactions with the following AH and as values would become…

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Q: Consider the reaction SO₂(g) + 2C(s,graphite)—S(s,rhombic) + 2CO(g) for which AH° = 75.80 kJ and AS°…

A: Consider the reactionSO2(g) + 2C(s, graphite) →S(s, rhombic) +2CO(g)for which ∆H° = 75.80 kJ and ∆S°…

Q: Calculate AS,º for NH3(g). AS:º = i JK-1

A: To calculate ∆S°f for NH3 (g) , we would first write a reaction for formation of NH3 (g) . Then…

Q: 3.) Consider the vaporization of liquids water to steam at a pressure of 1 atm. (a) is the process…

A: 3)  Vaporisation is an endothermic process as it involves absorption of energy to convert from…

Q: Choose the system with the greater entropy in each case: (a) 1 mol of H21g2 at STP or 1 mol of…

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Q: Consider the reaction 2Na(s) + 2H₂O(1) 2NaOH(aq) + H₂(g) for which AH = -368.6 kJ and AS° = -15.30…

A: 2 Na (s) + 2 H2O (l) ==> 2 NaOH (aq) + H2 (g)

Q: what is the name of the symbol of the single thermodynamic quantity (function) which determines…

A: what is the name of the symbol of the single thermodynamic quantity (function) which determines…

Q: Al,03(s) + 2Fe(s)–→Fe,03(s) + 2Al(s) for which AH° = 851.5 kJ and AS° = 37.00 J/K at 298.15 K. (1)…

A: The reaction takin place is given as, => Al2O3 (s) + 2 Fe (s) ---------> Fe2O3 (s) + 2 Al (s)…