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What is the name and symbol of the single thermodynamic quantity which determines whether or not a reaction is spontaneous?
G ≡ H -TS (or in another useful form dG = dH -TdS)
where
H is enthalpy
T is absolute temperature
S is entropy
What else can I help you with?
What reaction would most likely be spontaneous?
A spontaneous reaction is one that occurs naturally without the need for external energy. Typically, these reactions are characterized by a decrease in free energy, often associated with an increase in entropy (disorder) or the release of heat (exothermic). For example, the combustion of fossil fuels is a spontaneous reaction as it releases energy and increases the entropy of the system. In general, reactions that result in a stable product formation and favorable thermodynamic conditions are more likely to be spontaneous.
Is ni2 s2 ni s spontaneous?
To determine if the reaction ( \text{Ni}_2\text{S}_2 \rightarrow 2\text{NiS} ) is spontaneous, we would need to consider the Gibbs free energy change (( \Delta G )) for the reaction. If ( \Delta G < 0 ), the reaction is spontaneous. Factors such as temperature, pressure, and the enthalpy and entropy changes of the system also play a crucial role in this assessment. Without specific thermodynamic data, it's not possible to definitively state the spontaneity of the reaction.
What of the following generally determines if a reaction will occur?
Thermodynamics
What can be said about a redox reaction that has a positive pontential?
A redox reaction with a positive standard electrode potential indicates that the reaction is spontaneous under standard conditions. This means that the tendency for the reduction half-reaction to occur is favored, making it more likely for the oxidizing agent to gain electrons. In practical terms, such reactions can drive processes like electrochemical cells, where energy is harnessed from the spontaneous electron transfer. Thus, a positive potential signifies a favorable thermodynamic outcome for the reaction.
Is candle burning a spontaneous or non spontaneous reaction?
Candle burning is a spontaneous reaction. It is an exothermic reaction that occurs naturally and releases heat and light energy as the wax is being oxidized in the presence of oxygen from the air.
What does the term spontaneous mean in chemical reactions?
This is a very fast reaction.
What reaction would most likely be spontaneous?
A spontaneous reaction is one that occurs naturally without the need for external energy. Typically, these reactions are characterized by a decrease in free energy, often associated with an increase in entropy (disorder) or the release of heat (exothermic). For example, the combustion of fossil fuels is a spontaneous reaction as it releases energy and increases the entropy of the system. In general, reactions that result in a stable product formation and favorable thermodynamic conditions are more likely to be spontaneous.
What is the symbol for free-energy change?
The symbol for free-energy change is ΔG (delta G). It represents the change in Gibbs free energy during a chemical reaction, which determines whether the reaction is spontaneous or non-spontaneous.
Is the reaction exergonic and spontaneous or not?
Yes, the reaction is exergonic and spontaneous.
Is ni2 s2 ni s spontaneous?
To determine if the reaction ( \text{Ni}_2\text{S}_2 \rightarrow 2\text{NiS} ) is spontaneous, we would need to consider the Gibbs free energy change (( \Delta G )) for the reaction. If ( \Delta G < 0 ), the reaction is spontaneous. Factors such as temperature, pressure, and the enthalpy and entropy changes of the system also play a crucial role in this assessment. Without specific thermodynamic data, it's not possible to definitively state the spontaneity of the reaction.
Gibbs quantity of maximum possible work?
Gibbs free energy represents the maximum reversible work that can be extracted from a system at constant temperature and pressure. It combines the system's enthalpy and entropy to predict whether a reaction is spontaneous. The change in Gibbs free energy (∆G) determines whether a reaction will proceed spontaneously or not.
A reaction that occurs without provocation from an outside system is?
A spontaneous reaction.
Is the reaction spontaneous or non-spontaneous when considering the keyword "spontaneous vs non-spontaneous"?
In the context of "spontaneous vs non-spontaneous," a reaction is considered spontaneous if it occurs on its own without needing external influence. On the other hand, a non-spontaneous reaction requires external energy input to occur.
What are the units of Gibbs free energy and how do they relate to the thermodynamic properties of a system?
The units of Gibbs free energy are joules (J) or kilojoules (kJ). Gibbs free energy is a measure of the energy available to do work in a system at constant temperature and pressure. It relates to the thermodynamic properties of a system by indicating whether a reaction is spontaneous (negative G) or non-spontaneous (positive G) under given conditions.
What of the following generally determines if a reaction will occur?
Thermodynamics
What is the reverse of a spontaneous reaction, and how does it differ from a nonspontaneous reaction?
The reverse of a spontaneous reaction is a nonspontaneous reaction. In a spontaneous reaction, the reaction occurs naturally without any external influence, while in a nonspontaneous reaction, external energy input is required for the reaction to occur.
What can be said about a redox reaction that has a positive pontential?
A redox reaction with a positive standard electrode potential indicates that the reaction is spontaneous under standard conditions. This means that the tendency for the reduction half-reaction to occur is favored, making it more likely for the oxidizing agent to gain electrons. In practical terms, such reactions can drive processes like electrochemical cells, where energy is harnessed from the spontaneous electron transfer. Thus, a positive potential signifies a favorable thermodynamic outcome for the reaction.
