Entropy
The sign associated with the following entropy change: H2O (g) -> H2O (s)
What is negative?
It is standard for the process to be thermodynamically favored when this variable is <0.
What is the Gibbs free energy change?
In an equation that is at equilibrium, ΔG° is equal to
What is 0?
When reversing the order of a reaction, the ΔG° will change its...
What is sign?
As NaCl dissolves in water, the entropy of the process ...
What is increases?
If both the change in enthalpy and the change in entropy are positive, then the process will be thermodynamically favorable at...
What is high temperatures?
To convert from ΔG° to K you must use this equation where x is a variable. K = e-ΔG°f/RX. The variable X is representing ...
What is temperature?
The intermediate in the following reaction is...
NO + NO -> N2O2
N2O2 +O2 -> 2NO2
What is N2O2?
The entropy of a system at 25°C will be ________ (greater than, less than, or equal to) the entropy of a system at 293 K.
What is greater than?
For the process: CaCO3(s) ->CaO(s) +CO2(g), the ΔG°f of the reactants is -1392.7 and the ΔG°f of the products is -1276.2. Therefore, this process is ...
What is thermodynamically favorable?
The ΔG° of a reaction at 273 K that has a K-value of 5.5 x 10-3.
What is 11,809 J/mol?
For the following couple, the overall reaction is ...
PO4+C6H12O6 -> H2O+C6H10O9P
ATP +H2O -> ADP +PO4
What is ATP + C6H12O6 -> ADP + C6H10O9P?
What is the ΔS for the reaction 2H2 + O2 -> 2H2O given that S°(H2O) = 189 J/mol(K), S°(H2) = 131 J/mol(K), and S°(O2) = 205 J/mol(K)?
What is -89 kJ/mol(K)?
If 2NO(g) + O2 -> 2NO2 and the ΔG°f of NO is 73.8 kJ/mol, O2 is 0, and NO2 is 59.2. The ΔG°rxn is ...
What is -29.2 kJ/mol?
The ΔG at 298 K for a reaction with ΔH = -50 kJ/mol and ΔS= -55 kJ/mol.
What is -16,340 kJ/mol?
The ΔG for the following coupled reaction...
PO4+C6H12O6 -> H2O+C6H10O9P ΔG° = 13.8 kJ/mol
ATP +H2O -> ADP +PO4 ΔG° = -30.5 kJ/mol
What is -16.7 kJ/mol?
The temperature at which the reaction becomes spontaneous when ΔH = 60 kJ/mol and ΔS = 80 J/mol(K).
Hint: Set ΔG° = 0.
What is 750 K?
If the following information regarding the reaction CaCO3(s) -> CaO(s) +CO2(g) is true at 273 K, ΔG°f is: -1325.6 for CaCO3, -619.5 for CaO, and -454.7 for CO2. Additionally the ΔH°rxn is -164.9. Therefore the ΔS°rxn must be ____ for the process to be true
What is negative?
The equilibrium constant (K) at 298K for a reaction with ΔH° = -85 kJ/mol and ΔS° = -120 J/mol(K).
Hint: Use both ΔG° = ΔH° - TΔS° and ΔG° = -RTln(K)
What is 0.11?
If the final reaction of a reaction is A2B3 + C -> A2C + 3B, and the we know the following reactions form this, the ΔG°rxn is...
6B + 2A2 -> 2A2B3 ΔG° = -300 kJ
A2 + C -> A2C ΔG° = -120 kJ
What is 30 kJ?