Which product is the thermodynamically most stable? If you say, “This reaction is kinetically stable,” then that implies that the reaction occurs very slowly. The slower the reaction occurs, the greater the kinetic stability. Kinetic stability basically occurs when the reactants react really slowly. What does it mean to be kinetically favored? If it has reached the global minimum, we say it is thermodynamically stable. If it doesn’t have enough kinetic energy to move out of its current position, we say that it is kinetically stable or kinetically trapped. How do you know if a reaction is thermodynamically stable? When heat generated in the system (internal energy) increases enthalpy increases. What causes enthalpy to increase?Įnthalpy increases due to the changes in the reactants. If ΔH is positive, and –TΔS negative, the reaction will be spontaneous at high temperatures (increasing the magnitude of the entropy term). If ΔH is negative, and –TΔS positive, the reaction will be spontaneous at low temperatures (decreasing the magnitude of the entropy term). How do you know if a reaction is spontaneous? If the value of K is less than 1, the reactants in the reaction are favored. If the value of K is greater than 1, the products in the reaction are favored. The equilibrium constant expression is a mathematical relationship that shows how the concentrations of the products vary with the concentration of the reactants. How do you know if a reaction is product favored? Reactant favored processes (∆G + or E -) can be forced to occur with an external source of energy like a wall outlet or a battery. Can a reactant favored reaction be forced to occur? These processes are necessarily “thermodynamically favored” (ΔG° < 0) or negative. Thermodynamically favored processes or reactions are those that involve both a decrease in the internal energy of the components ( ΔH° 0). At what temperature does the reaction become thermodynamically favored? In the case of the exothermic and endothermic reactions, the former is more favorable as it releases energy. The reactions that do not require energy to be carried out are called thermodynamically favored reaction. Which is more likely to be thermodynamically favored? A reaction is favored if entropy increases: There is also a bias in nature toward increasing entropy in a system. Reactions can happen when enthalpy is transferred to the surroundings. How do you tell if the forward or reverse reaction is faster?Ī reaction is favored if enthalpy decreases: There is a bias in nature toward decreasing enthalpy in a system.What happens to the forward and reverse rates at equilibrium?.How do you know if a reaction is at equilibrium?.What does it mean when a reaction is favored?.Why is negative Gibbs free energy spontaneous?.How do you tell if a reaction is spontaneous without using calculations?.Is enthalpy or entropy the driving force?.Which product is the thermodynamically most stable?.What does it mean to be kinetically favored?.How do you know if a reaction is thermodynamically stable?.How do you know if a reaction is spontaneous?.How do you know if a reaction is product favored?.Can a reactant favored reaction be forced to occur?.At what temperature does the reaction become thermodynamically favored?.Which is more likely to be thermodynamically favored?.How do you know if a reaction is enthalpy favored?.
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