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A low temperature can make a reaction spontaneous when it is exothermic, meaning it releases heat, and has a negative change in enthalpy (ΔH < 0). Additionally, if the reaction has a positive change in entropy (ΔS > 0), the Gibbs free energy change (ΔG = ΔH - TΔS) will be negative at low temperatures, favoring spontaneity. Conversely, if the reaction is endothermic (ΔH > 0) and has a negative entropy change (ΔS < 0), it will not be spontaneous at low temperatures.
What else can I help you with?
What information is needed to be certain that a chemical reaction is non spontaneous?
To determine if a chemical reaction is non-spontaneous, you need information about the Gibbs free energy change (ΔG) for the reaction. If ΔG is positive, the reaction is non-spontaneous under the given conditions. Additionally, knowing the temperature and pressure conditions, as well as the enthalpy (ΔH) and entropy (ΔS) changes, can help clarify the spontaneity of the reaction using the Gibbs free energy equation: ΔG = ΔH - TΔS.
When is a reaction always spontaneous reaction?
A reaction is always spontaneous when it results in an increase in entropy (disorder) and occurs at a constant temperature and pressure, according to the second law of thermodynamics. Additionally, reactions that release energy, such as exothermic reactions, are often spontaneous. However, spontaneity also depends on the Gibbs free energy change; a negative Gibbs free energy change (ΔG < 0) indicates that a reaction is spontaneous under the given conditions.
Forming a triacylglyceride from three fatty acids and glycerol...identify this reaction as either anabolic or catabolic endergonic or exergonic and spontaneous or non spontaneous.?
Forming a triacylglyceride from three fatty acids and glycerol is an anabolic reaction that is endergonic (requires energy input) and non-spontaneous under normal cellular conditions.
What does a positive value of delta G mean for a reaction?
A positive value of delta G (ΔG) indicates that a reaction is non-spontaneous under standard conditions, meaning it requires an input of energy to proceed. In this case, the products have higher free energy than the reactants, suggesting that the reaction is unfavorable in its current direction. Therefore, the reaction is more likely to occur when coupled with a spontaneous process or under different conditions that favor the formation of products.
What does a positive value of G0 mean for a reaction?
A positive value of G0 (standard Gibbs free energy change) indicates that the reaction is non-spontaneous under standard conditions. This means that, at standard temperature and pressure, the reactants are favored over the products, and the reaction will not proceed in the forward direction without the input of energy. In practical terms, it suggests that the reaction is thermodynamically unfavorable.
Under what conditions will a low temperature make a reaction spontaneous?
if H and S are both negative
What information is needed to be certain that a chemical reaction is non spontaneous?
To determine if a chemical reaction is non-spontaneous, you need information about the Gibbs free energy change (ΔG) for the reaction. If ΔG is positive, the reaction is non-spontaneous under the given conditions. Additionally, knowing the temperature and pressure conditions, as well as the enthalpy (ΔH) and entropy (ΔS) changes, can help clarify the spontaneity of the reaction using the Gibbs free energy equation: ΔG = ΔH - TΔS.
When is a reaction always spontaneous reaction?
A reaction is always spontaneous when it results in an increase in entropy (disorder) and occurs at a constant temperature and pressure, according to the second law of thermodynamics. Additionally, reactions that release energy, such as exothermic reactions, are often spontaneous. However, spontaneity also depends on the Gibbs free energy change; a negative Gibbs free energy change (ΔG < 0) indicates that a reaction is spontaneous under the given conditions.
What is the Delta G prime equation used for in thermodynamics?
The Delta G prime equation is used in thermodynamics to calculate the standard Gibbs free energy change of a chemical reaction under standard conditions. It helps determine whether a reaction is spontaneous or non-spontaneous at a given temperature.
Can salt dissolve in water?
Yes, the dissociation of salt in water is a spontaneous reaction under normal conditions.
A chemical reaction has a positive H value and a positive S value Under what conditions is the reaction spontaneous?
The spontaneity of a reaction is determined by the sign of the Gibbs free energy (ΔG). If both enthalpy (H) and entropy (S) are positive, the reaction can be spontaneous at high temperatures where the TΔS term outweighs the positive ΔH term, resulting in a negative ΔG. This means the reaction will be spontaneous at elevated temperatures.
A chemical reaction has a positive ΔH value and a positive ΔS value Under what conditions is the reaction spontaneous?
The reaction will be spontaneous at high temperatures (T) where TΔS > ΔH, according to Gibbs free energy equation, ΔG = ΔH - TΔS. At high enough temperatures, the TΔS term can outweigh the positive ΔH term, leading to a negative ΔG value and a spontaneous reaction.
Forming a triacylglyceride from three fatty acids and glycerol...identify this reaction as either anabolic or catabolic endergonic or exergonic and spontaneous or non spontaneous.?
Forming a triacylglyceride from three fatty acids and glycerol is an anabolic reaction that is endergonic (requires energy input) and non-spontaneous under normal cellular conditions.
What does a positive value of delta G mean for a reaction?
A positive value of delta G (ΔG) indicates that a reaction is non-spontaneous under standard conditions, meaning it requires an input of energy to proceed. In this case, the products have higher free energy than the reactants, suggesting that the reaction is unfavorable in its current direction. Therefore, the reaction is more likely to occur when coupled with a spontaneous process or under different conditions that favor the formation of products.
What redox conditions will produce a spontaneous reaction?
The sum of the voltages of the half-reactions is positive.
What does a positive value of G0 mean for a reaction?
A positive value of G0 (standard Gibbs free energy change) indicates that the reaction is non-spontaneous under standard conditions. This means that, at standard temperature and pressure, the reactants are favored over the products, and the reaction will not proceed in the forward direction without the input of energy. In practical terms, it suggests that the reaction is thermodynamically unfavorable.
What is the definition of delta G naught and how does it relate to the spontaneity of a chemical reaction?
Delta G naught, also known as standard Gibbs free energy change, is a measure of the energy change that occurs in a chemical reaction under standard conditions. It indicates whether a reaction is spontaneous or non-spontaneous. If delta G naught is negative, the reaction is spontaneous and can proceed without external energy input. If delta G naught is positive, the reaction is non-spontaneous and requires external energy input to occur.
