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Gibbs free energy (G) becomes negative at a given enthalpy (H) and entropy (S) when the temperature (T) is sufficiently high, leading to a scenario where the entropy term (TΔS) outweighs the enthalpy term (ΔH) in the Gibbs free energy equation: G = ΔH - TΔS. Specifically, if ΔS is positive (indicating an increase in disorder) and ΔH is either negative or less positive than the product of T and ΔS, then G can be negative, promoting spontaneity in the reaction or process. This situation typically occurs in reactions that favor the formation of products with greater disorder at higher temperatures.
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What could make G become negative at a given enthaply and entropy?
Changing the temperature. my only explanation is I got it right so I hope this helps.
The equation G equals H-TS predicts that?
the Gibbs free energy (G) of a system is equal to the enthalpy (H) minus the temperature (T) multiplied by the entropy (S). This equation is used to determine whether a reaction is spontaneous (ΔG < 0) or non-spontaneous (ΔG > 0) at a given temperature.
How form a spontaneous reaction 298 k?
A reaction will be spontaneous at 298 K if the Gibbs free energy change (ΔG) for the reaction is negative. This means that the reaction will proceed in the forward direction without requiring an external input of energy. The equation ΔG = ΔH - TΔS can be used to determine if a reaction is spontaneous at a given temperature, where ΔH is the change in enthalpy and ΔS is the change in entropy.
What conditions are most likely to result in a spontaneous chemical reaction or process on the Gibbs free energy equation that is ΔG ΔH TΔS?
Conditions that are most likely to result in a spontaneous chemical reaction or process, based on the Gibbs free energy equation (ΔG = ΔH - TΔS), include when the change in enthalpy (ΔH) is negative (exothermic) and the change in entropy (ΔS) is positive. When ΔG is negative, the reaction will be spontaneous at the given temperature.
What explains the entropy change of a gas reaction?
if there is an increase in the number of gas molecules , then ^S > 0
What could make delta G become negative at a given enthalpy and entropy?
For delta G to become negative at a given enthalpy and entropy, the process must be spontaneous. This can happen when the increase in entropy is large enough to overcome the positive enthalpy, leading to a negative overall Gibbs free energy. This typically occurs at higher temperatures where entropy effects dominate.
What could make G become negative at a given enthalpy and entropy?
Changing the temperature
What could make Delta become negative at a given enthalpy and entropy?
The equation for ∆G is ∆G = ∆H - T∆S H is enthalpy and S is entropySo, ∆G is negative if T∆S is greater than ∆H
What could make G become negative at a given enthaply and entropy?
Changing the temperature. my only explanation is I got it right so I hope this helps.
What is S in the equation delta G equals delta H minus TdeltaS?
The change in enthalpy between products and reactants in a reaction
How is enthalpy related to spontaneity of a reaction?
S > 0 contributes to spontaneity.
How does the Gibbs free energy predict spontaneity?
It tells if the reaction will process spontaneously or not
What is the difference between the Gibbs and Helmholtz free energy equations and how do they relate to each other in thermodynamics?
The Gibbs free energy equation considers both the enthalpy and entropy of a system, while the Helmholtz free energy equation only considers the internal energy and entropy. In thermodynamics, these equations are related through the relationship G H - TS, where G is the change in Gibbs free energy, H is the change in enthalpy, S is the change in entropy, and T is the temperature. This equation helps determine whether a reaction is spontaneous or non-spontaneous at a given temperature.
How can one determine the free energy change in a system without any cost involved?
One can determine the free energy change in a system without any cost involved by using the equation: G H - TS, where G is the change in free energy, H is the change in enthalpy, T is the temperature in Kelvin, and S is the change in entropy. This equation allows for the calculation of free energy change based on the enthalpy and entropy changes in the system at a given temperature.
Why is the enthalpy change of combustion always negative?
The enthalpy change of combustion is always negative because it involves the breaking of bonds in the reactants, which requires energy input, and the formation of new bonds in the products, which releases energy. The energy released during bond formation is greater than the energy required for bond breaking, resulting in a net release of energy, hence the negative value.
Define enthalpy and how it is measured?
Enthalpy is a particular amount of heat that is produced or released at a given pressure. There are specific equations that must be used to calculate enthalpy.
Is the enthalpy of formation for na2co3 endothermic or exothermic?
The enthalpy of formation for Na2CO3 is negative, which means it is exothermic. This indicates that the formation of one mole of Na2CO3 from its elements in their standard states releases heat energy.
