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Gibbs Free Energy

Q. The value of ΔG° at 25 °C for the following reaction is ___ kJ/mol.

Solved • Apr 29, 2020

Gibbs Free Energy

Q. Calcium carbonate can decompose into calcium oxide and carbon dioxide: CaCO3(s) ⇄ CaO(s) + CO2(g) Assuming that ΔH and ΔS are independent of temperature, at what temperature will solid CaCO3 and solid CaO be in equilibrium with 1.0 atm of CO2? ΔH°f (kJ/mol) S° (J/mol⋅K) CaO(s) -635.1 39.8 CaCO3(s) -1206.9 92.9 CO2(g) -393.5 213.8

Solved • Apr 27, 2020

Gibbs Free Energy

Q. Calculate the value of ΔGo for the reaction: 2 HNO3 (aq) + NO (g) —>3NO2 (g) + H2O (l) using the following information:

Solved • Apr 27, 2020

Gibbs Free Energy

Q. The standard enthalpy of formation of Mn2O3 is -962.3 kJ/mol. How much heat energy is liberated when 6.2 grams of manganese are oxidized by oxygen gas to Mn2O3 at standard state conditions? Answer in units of kJ.

Solved • Apr 22, 2020

Gibbs Free Energy

Q. Calculate the free energy change at 298 degrees Celsius for each of the following reactions:

Solved • Apr 21, 2020

Gibbs Free Energy

Q. Assume enthalpy and entropy change are independent of temperature. Calculate free energy change for the following reaction at 80 degree Celsius.

Solved • Apr 21, 2020

Gibbs Free Energy

Q. Calculate the value for ΔGo for the reaction 2 H2(g) + O2 (g) à 2 H2O (l) if a text lists ΔHo for the reaction as -571.66 kJ and the following values for So are available: ​H2O (l) = 70 J/mol K H2 (g) = 114.7J/mole K O2 (g) = 205.0 J/mole K Is the reaction spontaneous as written? Explain.

Solved • Apr 21, 2020