The value of ΔG∘ at 221.0∘C for the formation of phosphorous
trichloride from its constituent elements,
P2(g)+3Cl2(g)→2PCl3(g)
is ________ kJ/mol. At 25.0∘C for this reaction, ΔH∘ is
−720.5kJ/mol, ΔG∘ is −642.9kJ/mol, and ΔS∘ is −263.7J/K.
−662.2 |
−590.2 |
1.30×105 |
−850.8 |
5.76 ×104 |
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The value of ΔG∘ at 221.0∘C for the formation of phosphorous trichloride from its constituent elements,...
The value of ΔG° at 241.0°C for the formation of phosphorous trichloride from its constituent elements, P2(g) + 3Cl2(g) → 2PCl3(g) is ________ kJ/mol. At 25.0°C for this reaction, ΔH° is -720.5 kJ/mol, ΔG° is -642.9 kJ/mol, and ΔS° is -263.7 J/K.
A reaction has an equilibrium constant of Kp=0.061 at 27 ∘C. Part A Find ΔG∘rxn for the reaction at this temperature. Find for the reaction at this temperature. 6.98 kJ 0.839 kJ -6.98 kJ 0.628 kJ Part B Above what temperature does the following reaction become nonspontaneous? 2 H2S(g) + 3 O2(g) → 2 SO2(g) + 2 H2O(g) ΔH = -1036 kJ; ΔS = -153.2 J/K 298 K 158.7 K 6.762 × 103 K This reaction is nonspontaneous at all...
A) A reaction has an equilibrium constant of Kp=0.280 at 44 ∘C. Find ΔG∘rxn for the reaction at this temperature. Find for the reaction at this temperature. 3.35 kJ -3.35 kJ 0.404 kJ 0.466 kJ B) Above what temperature does the following reaction become nonspontaneous? FeO(s) + CO(g) → CO2(g) + Fe(s) ΔH= -11.0 kJ; ΔS = -17.4 J/K Above what temperature does the following reaction become nonspontaneous? FeO(s) + CO(g) → CO2(g) + Fe(s) = -11.0 kJ; = -17.4...
For reactions carried out under standard-state conditions, the equation ΔG = ΔH − TΔS becomes ΔG° = H° − TΔS°. Assuming ΔH° and ΔS° are independent of temperature, one can derive the equation: ln( K2 K1 ) = ΔH° R ( T2 − T1 T1T2 ) where K1 and K2 are the equilibrium constants at T1 and T2, respectively. Given that at 25.0°C, Kc is 4.63×10−3 for the reaction N2O4(g) longrightleftarrow 2NO2(g) ΔH° = 58.0 kJ/mol calculate the equilibrium constant...
Everything is correct now... Can you please help me out with these? 1)The value of Hº for the decomposition of calcium chloride into its constituent elements, CaCl2 (s) Ca (s) + C12 (8) is_ A) +795.8 B) 0.00 C) -795.8 D) +397.9 E) -3979 kJ/mol. 2)The value of Gºat 25 °C for the decomposition of gaseous sulfur trioxide to solid elemental sulfur and gaseous oxygen, 2503 (g) 28 (s, rhombic) + 302 (g) is_ kJ/mol. A) -740.8 B)-370.4 C) +740.8...
Use the table below to answer the question that follow. Thermodynamic Quantites for Selected Substances at 298.15 K (25°C) Substance ΔH°f (kJ/mol) ΔG°f (kJ/mol) S (J/K⋅mol) Calcium Ca (s) 0 0 41.4 CaCl2 (s) -795.8 -748.1 104.6 Ca2+ (aq) 226.7 209.2 200.8 Clorine Cl2 (g) 0 0 222.96 Cl- -167.2 -131.2 56.5 Oxygen O2 (g) 0 0 205.0 H2O (l) -285.83 -237.13 69.91 Phosphorus P2 144.3 103.7 218.1 PCl3 (g) -288.1 -269.6 311.7 POCl3 (g) -542.2 -502.5 325 Sulfur S...
Thermodynamic Quantities for Selected Substances at 298.15K (25) Substance AH' (kJ/mol AG : (kJ/mol) SOK-mol) Caldum Ca (5) CaCl2 (6) Caz' (a) 0 -795.8 -749/1 2092 41.4 104,6 200.8 226.7 Chlore Cl2(8) CI-(9 0 0 2229 565 - 167.2 -1312 Oxygen O2(8) Hzo (1) 0 -285.83 0 -237 13 2050 69.91 Phosphorus P2 (8) PC13 (8) POCl3 () 141.3 -288.1 -54212 106.7 -269.6 -5025 218.1 311.7 325 Sulfur S (s rhombic) 9028) 9038) 0 -269.9 -395.2 0 - 3004 -3704...
Nitric oxide can be made from the reaction of oxygen and nitrogen gases. O2(g) + N2(g) → 2NO(g) If ΔG° = 165.5 kJ, and ΔH° = 180.4 kJ, what is ΔS° at 325°C? Select one: a. 0.142 kJ/K b. 1.02 kJ/K c. 0.0125 kJ/K d. 0.0458 kJ/K e. 0.0249 kJ/K
The standard heat of formation, ΔH∘f, is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard states have ΔH∘f=0. Heat of formation values can be used to calculate the enthalpy change of any reaction. Consider, for example, the reaction 2NO(g)+O2(g)⇌2NO2(g) with heat of formation values given by the following table: Substance ΔH∘f (kJ/mol) NO(g) 90.2 O2(g) 0 NO2(g) 33.2 Then the standard heat...
The standard enthalpy of formation (ΔH∘f) is the enthalpy change that occurs when exactly 1 mol of a compound is formed from its constituent elements under standard conditions. The standard conditions are 1 atm pressure, a temperature of 25 ∘C , and all the species present at a concentration of 1 M . A "standard enthalpies of formation table" containing ΔH∘f values might look something like this: Substance ΔH∘f H(g) 218 kJ/mol H2(g) 0 kJ/mol Ba(s) 0 kJ/mol Ba2+(aq) −538.4...