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The purpose is to determine the available energy. Some of the energy in any system is useless - can't be converted into useful work.

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Q: What is the purpose of th gibbs free energy equation you don't need to know the equation itself?
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Is the gibbs free energy equation used to measure thermodynamic functions from equilibrium measurements at different temperatures?

Yes, the Gibbs free energy equation can be used to determine the thermodynamic feasibility of a reaction as well as to calculate the equilibrium constant based on measurements at different temperatures. The equation relates the change in Gibbs free energy to the change in enthalpy, entropy, and temperature.


Derivation of gibbs-duhem-margules equation using gibbs-duhem equation?

Gibbs-duhem-margules equation and its derivation


Use the Gibbs free energy equation shown below to find the Gibbs free energy change for the formation of potassium chloride at 25°C?

-225.3 KJ


How does gibbs energy relate to the changes in ethalpy and ethropy?

Gibbs energy accounts for both enthalpy (heat) and entropy (disorder) in a system. A reaction will be spontaneous if the Gibbs energy change is negative, which occurs when enthalpy is negative (exothermic) and/or entropy is positive (increased disorder). The relationship between Gibbs energy, enthalpy, and entropy is described by the equation ΔG = ΔH - TΔS, where T is temperature in Kelvin.


What is the Gibbs free energy of the reaction at 300K?

To determine the Gibbs free energy of a reaction at 300K, you need to know the standard Gibbs free energy change of the reaction (ΔG°) at that temperature. You can use the equation ΔG = ΔG° + RT ln(Q), where R is the gas constant, T is the temperature in Kelvin, and Q is the reaction quotient. By plugging in the values, you can calculate the Gibbs free energy of the reaction at 300K.


Using Gibbs free energy equation what is the Gibbs free energy change for the synthesis of carbon disulfide at 25C?

The Gibbs free energy change for a reaction can be calculated using the equation ΔG = ΔH - TΔS, where ΔH is the enthalpy change and ΔS the entropy change. Without specific values for ΔH and ΔS for the synthesis of carbon disulfide, a numerical value cannot be provided.


Using the Gibbs free energy equation what is the temperature in degrees celsius above which decompostion of KCIO4 is spontaneous?

-51 - -50.5


How do you use the Gibbs free energy equation to find the Gibbs free energy change for the oxidation of iron at 25 degrees C?

You would first determine the Gibbs free energy of formation for iron oxide and iron, then use the Gibbs free energy equation: ΔG = ΔG(products) - ΔG(reactants) = ΔG°(products) - ΔG°(reactants) + RT ln Q. Calculate the standard Gibbs free energy change at the given temperature and substitute the values into the equation to find the Gibbs free energy change for the reaction.


Using the Gibbs free energy equation what is the temperature range for which the oxidation of lead is spontaneous?

The reaction is spontaneous below 554.8/0.1975 K.


According to the Gibbs free energy equation what is the temperature range for which the formation of liquid bromine is spontaneous?

The formation of liquid bromine is spontaneous when the Gibbs free energy change for the process is negative, which occurs when ΔG < 0. This means the temperature must be within the range where ΔG is negative, which typically corresponds to temperatures above the boiling point of bromine (~332K) where the entropy term dominates over the enthalpy term in the Gibbs free energy equation.


What is the value equal to the enthalpy minus temperature times entropy?

The value you are referring to is the Gibbs free energy, which is equal to the enthalpy minus the temperature multiplied by the entropy: ΔG = ΔH - TΔS. This equation is used to determine if a reaction is spontaneous under certain conditions.


How can you decide whether a chemical process is spontaneous?

Whether or not a chemical process is spontaneous is determined by a variable named the Gibbs' free energy, or just Gibbs' energy, given by the formula G = H - TS, where G is the Gibbs' energy, H is enthalpy, T is temperature and S is entropy. A negative G implies that the chemical process is spontaneous and will occur by itself, and a positive G implies that energy is required to make the reaction occur.