Calculations and Multiple Choice. 14. Consider the following reaction at constant P. Use determine the value of ASsurr at 355 K. Predict wh reaction will be spontaneous at this temperature. 2 NO(g) + O2(g) → 2 NO2(g) AH = -114 kJ A) ASsurr = +114 kJ/K, reaction is spontaneous B) ASsurr = +114 kJ/K, reaction is not spontaneous C) ASsurr = +321 J/K, reaction is spontaneous D) ASsurr = -321 J/K, reaction is spontaneous E) ASsurr = +321 J/K, it is not possible to predict the spo without more information.
Spontaneous Process- Chemical or biological events that happen on their own, unaffected by extraneous forces or influences, are referred to as spontaneous reactions. Natural processes are another name for spontaneous transformations. Basically, it doesn't need energy input to move forward under specific circumstances. The total energy of the products in this instance is lower than the total energy of the reactants.
These reactions increase entropy and also have negative enthalpies. These reactions have a tendency to release the system's stored free energy, making it more stable.
This can be explained by the release of free energy from the system, which corresponds to a negative change in free energy but a positive change in the surroundings. These types of reactions happen quickly, and the change of Gibbs's free energy (G) is a negative value.
Non- Spontaneous Process- Chemical reactions that need an energy input to continue or that can't occur without the influence of outside causes are referred to as non-spontaneous reactions. It needs energy input to move forward. The total energy of the products in this instance is more than that of the reactants.
Entropy is reduced by these processes, which also have positive enthalpies. The system's overall energy tends to rise as a result of these processes. Since more energy is expended initiating a reaction than is recovered from it, the total quantity of energy is lost. Because these kinds of reactions take time to complete, the change in Gibbs free energy (G) is positive.
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