Calculate the changes in free energy, enthalpy, and entropy when 1.00 mol Ar(g) at 27°C is compressed isothermally from 100.0 L to 15.0 L.
ΔH = _____kJ
ΔS = _____J/K
ΔG = _____kJ
using thermodynamics equations
for isothermal condition we calculated entropy ,enthalpy and free
energy .
Calculate the changes in free energy, enthalpy, and entropy when 1.00 mol Ar(g) at 27°C is...
change in Helmholtz free energy for this process? (-2862 kJ/mol) 7. Calculate the entropy change when 0.7760 moles of oxygen gas, a perfect gas, expands isothermally from a volume of 36.80 mL to 84.90 mLs. (ANS: 5.394 J/K) 8. The standard reaction enthalpy for the hydrogenation of propene, CH2=CHCH + 5O2 →
Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: ΔH∘rxn=ΔH∘f(products)−ΔH∘f(reactants) Entropy change, ΔS∘, is a measure of the number of energetically equivalent microstates introduced into the system during the reaction. The degree of spontaneity of a reaction is represented by the Gibbs free...
Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: ΔH∘rxn=ΔH∘f(products)−ΔH∘f(reactants) Entropy change, ΔS∘, is a measure of the number of energetically equivalent microstates introduced into the system during the reaction. The degree of spontaneity of a reaction is represented by the Gibbs free...
(a) Calculate the free energies of micellisation at each temperature, ΔG°micelle, the enthalpy of micellisation, ΔH°micelle, and the entropy of micellisation, ΔS°micelle, from the data given below. CMC at 25°C (10–3 M) CMC at 40°C (10–3 M) 1.04 4.46
Calculate the change in entropy that occurs when 18.02 g of ice at –17.5°C is placed in 90.08 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K^-1 mol^-1 and 75.3 J K^-1 mol^-1, respectively, and the molar enthalpy of fusion for ice is 6.01 kJ/mol. Change in entropy = ______J/K
Calculate the Gibbs energy, entropy, and enthalpy of mixing when 1.00 mole of C6H14 (hexane) is mixed with 1.25 mole of C7H16 (heptane) at 298 K. Treat the solution as ideal.
2Ca(s)+O2(g) → 2CaO(s) ΔH∘rxn= -1269.8 kJ; ΔS∘rxn= -364.6 J/K For this problem, assume that all reactants and products are in their standard states. Calculate the free energy change for the reaction at 17 ∘C. Express your answer using four significant figures. ΔG = _____kJ
I. (a) Calculate the Gibbs free energy change ΔG and the entropy change ΔS when 1.0 L of CO2 and 9.0 L of N2, initially separated and both at 2.0 atm, are allowed to form a homogeneous mixture at a constant temperature of 0°C and with the final (total) pressure still 2.0 atm. decreases the sign should be negative). at this temperature, that is, μ-μ (b) What is the change in the chemical potential for CO2 between the initial and...
QUESTION 10 Calculate the enthalpy, entropy and free energy of mixing one mole of toluene and two moles of benzene at 25C and latm. Assume an ideal solution ESTION 15 Addition of 4 g of non volatile solute to 250 g of water lower the freezing point of water by 0.087 k. calculate the molecular weight of solute, K f water = 1.86 k.kg/mol. QUESTION 6 calculate the weight of ethylene Henry law constant for the solubility of ethylene in...
The decomposition of crystalline N2O5 N2O5 (s) —> 2 NO2 (g) + 1/2 O2 (g) is an example of a reaction that is thermodynamically favored even though it absorbs heat. At 25°C we have the following values for the standard state entrapped and free energy changes of the reaction: ΔH° = +109.6 kJ/mol ΔG° = -30.5 kJ/mol a. Calculate ΔS° at 25°C b. Why is the entropy change so favorable for this reaction? Please answer and explain both questions!