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When the Gibbs free energy for a reaction is greater than zero, the reaction is "disfavored" - won't proceed in that direction - in fact it may try go in the reverse direction if possible.
When the Gibbs free energy for a reaction is less than zero, the reaction is "favored" - it should proceed as written spontaneously.
When the Gibbs free energy for a reaction is exactly zero - it is in equilibrium, with the forward and back ward reactions occurring at the same rate.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agokokluot es e louktos Delta G <> Delta H
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What is a negative Gibbs free-energy value an indication of?
Spontaneous reaction
What does Gibbs free energy depends on?
it depends on the entropy and enathalpy of the reaction
What is true about the numerical value of the Gibbs free-energy change for a spontaneous reaction?
B
Using Gibbs free energy equation what is the Gibbs free energy change for the synthesis of carbon disulfide at 25C?
δg = (-992.0) - (298)(-294.6)(1/1000)
What is an exergonic reaction?
Exergonic reactions indicate a negative change in Gibbs free energy, which in English means that the reactions are spontaneous and do not require addition of energy. The exchange of oxygen and carbon dioxide in blood and lungs is an example. It is the concentration gradient that runs these exchanges passively, without additional energy from the cells.
What is the Gibbs free energy of the reaction at 300K?
150
Why is hydrogen combustible?
Fundamentally, because the Gibbs free energy of elemental hydrogen and oxygen is substantially greater than the Gibbs free energy of the water formed by their chemical reaction, and the activation energy for the reaction is not excessively high.
What is a negative Gibbs free-energy value an indication of?
Spontaneous reaction
What does the gibbs free energy predict?
It predicts whether or not a reaction will be spontaneous.
What does Gibbs's free energy depend on?
it depends on the entropy and enathalpy of the reaction
What does Gibbs free energy depends on?
it depends on the entropy and enathalpy of the reaction
How does Gibbs free energy predict spontaneous?
If G < 0, the reaction is spontaneous.
An endergonic reaction is a reaction in which the change in Gibbs free energy is what?
Positive (greater than 0).
What is true about the numerical value of the Gibbs free-energy change for a spontaneous reaction?
B
What is the name and symbol of the single thermodynamic quantity which determines whether or not a reaction is spontaneous?
Gibbs free energy -- symbol G. If the change in Gibbs free energy for a reaction is negative, the reaction is spontaneous. If it is zero, you are at equilibrium. If it is positive, the reaction is NOT spontaneous.G ≡ H -TS (or in another useful form dG = dH -TdS)whereH is enthalpyT is absolute temperatureS is entropy
What does it mean if a reaction is having a free energy close to zero?
If the Gibbs free energy is close to zero, the reaction is close to equilibrium.
Is the Gibbs free energy negative in the spontaneous reaction?
Yes, as long as the entropy of the universe increases.
