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What could make G become negative at a given enthalpy and entropy?
Changing the temperature
Is an exothermic reaction always spontaneous?
No, an exothermic reaction is not always spontaneous. The spontaneity of a reaction depends on factors such as temperature, pressure, and the entropy change of the system.
Is the change in entropy, delta S, positive or negative for a spontaneous reaction?
For a spontaneous reaction, the change in entropy (delta S) is typically positive.
What does a negative deltaH tell about a reaction?
the reaction is exothermic
What equation is used to indicate the exothermic reaction?
An exothermic reaction is typically indicated by a negative sign in front of the enthalpy change (∆H) in the reaction equation. This negative sign signifies that heat is released to the surroundings during the reaction.
When a chemical reaction has a negative delta G is the reaction exothermic or endothermic?
When a chemical reaction has a negative delta G, the reaction is exothermic because delta G is the change in energy of a system and the change in its entropy. If the effect of a reaction is to reduce G, the process will be spontaneous so delta G is negative. Hope this helps :)
What could make G become negative at a given enthalpy and entropy?
Changing the temperature
Is an exothermic reaction always spontaneous?
No, an exothermic reaction is not always spontaneous. The spontaneity of a reaction depends on factors such as temperature, pressure, and the entropy change of the system.
Is the change in entropy, delta S, positive or negative for a spontaneous reaction?
For a spontaneous reaction, the change in entropy (delta S) is typically positive.
Select all the conditions below that are most likely to result in a spontaneous chemical reaction or process?
Exothermic reaction Decrease in entropy Increase in entropy Positive change in free energy Negative change in free energy
What kind of reaction occurs when the entropy change of an endothermic reaction is negative?
The reaction is exothermic
What does a negative deltaH tell about a reaction?
the reaction is exothermic
What equation is used to indicate the exothermic reaction?
An exothermic reaction is typically indicated by a negative sign in front of the enthalpy change (∆H) in the reaction equation. This negative sign signifies that heat is released to the surroundings during the reaction.
What can be said about a reaction with H -890 kJmol and S -0.24 kJ(mol K)?
The reaction is exothermic because the enthalpy change is negative (-890 kJ/mol). The reaction may be spontaneous at low temperatures due to the negative entropy change (-0.24 kJ/(mol K)), which decreases the overall spontaneity of the reaction.
How can an endothermic reaction be spontaneous at room temperature?
An endothermic reaction can be spontaneous at room temperature if the increase in entropy of the system is large enough to overcome the energy input required for the reaction. This can happen if the products of the reaction have higher entropy than the reactants. As a result, the overall change in free energy can be negative even though the reaction is endothermic.
What type of reaction is exothermic reaction?
The reaction in which energy is being released, and the overall energy change (enthalpy) is negative.
What factors determine whether a chemical reaction will proceed in an energetically favorable or unfavorable direction?
The factors that determine whether a chemical reaction will proceed in an energetically favorable or unfavorable direction include the difference in energy between the reactants and products (enthalpy change), as well as the entropy change and temperature of the system. If the overall change in energy is negative (exothermic) and the increase in disorder (entropy) is positive, the reaction is likely to proceed in a favorable direction.
