In your example using methane gas, we can look at Gibbs free energy for the reactants and products and decide that the products are more thermodynamically stable than the reactants, and therefore methane gas in the presence of oxygen at 1 atm and 298 K is thermodynamically unstable..
Thereof, what does thermodynamically stable mean?
Thermodynamic stability is a term used in chemistry to describe a chemical system that is neither consuming nor releasing heat energy. In the absence of a change in thermal energy, the substance is not undergoing a chemical reaction and is, therefore, stable.
Also Know, what is the difference between kinetically stable and thermodynamically stable? If you say, "This reaction is kinetically stable," then that implies that the reaction occurs very slowly. Thermodynamic stability depends on whether or not the reaction is spontaneous. This depends on the change in free energy (ΔG). A thermodynamically stable reaction is one that basically does not react.
Moreover, which is the most thermodynamically stable?
Black phosphorus is the thermodynamically stable form of phosphorus at room temperature and pressure.
Why is graphite thermodynamically more stable?
Thermodynamically the most stable allotrope of carbon is Graphite. It has standard entropy assigned zero. Graphite contains one delocalized electron per carbon. These cause the greater attraction between carbon atoms hence giving stronger bonds, more stability to the structure.
Related Question Answers
How do you define enthalpy?
Enthalpy is a thermodynamic property of a system. It is the sum of the internal energy added to the product of the pressure and volume of the system. It reflects the capacity to do non-mechanical work and the capacity to release heat. Enthalpy is denoted as H; specific enthalpy denoted as h.What makes a chemical stable?
Chemical stability. Thermodynamic stability occurs when a system is in its lowest energy state, or chemical equilibrium with its environment. This may be a dynamic equilibrium, where individual atoms or molecules change form, but their overall number in a particular form is conserved.Why is ATP thermodynamically unstable?
ATP is thermodynamically unstable, it is a high energy molecule, it wants to move from its high energy state to a lower energy state. They say that since ATP wants to move from ATP (high) to ADP (low) this reaction is spontaneous.Which compound is more stable?
The most stable compound is - Tardigrade.Why emulsion is thermodynamically unstable?
With the exception of some microemulsions an emulsion is always thermodynamically unstable. That is because the interfacial tension is always greater than zero so it always costs energy to increase the interfacial area. For example emulsions in water are often charged - typically the droplets carry a negative charge.How do you know if something 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. If it has reached the global minimum, we say it is thermodynamically stable.Why is the lowest energy state the most stable?
If a system is in its lowest-energy state, the only possible impetus to change would be an external disturbance. So a system in its lowest energy state is stable unless externally forced. That's basically how we define stability. So a system in its lowest energy state is stable unless externally forced.What is r in Gibbs free energy?
G = free energy at any moment. G = standard-state free energy. R = ideal gas constant = 8.314 J/mol-K. T = temperature (Kelvin) lnQ = natural log of the reaction quotient.What does stable mean in science?
stable - Medical Definition Having no known mode of decay; indefinitely long-lived. Used of atomic particles. Not easily decomposed or otherwise modified chemically.What is a stable compound?
A compound can be stable on its own, under the given conditions such as temperature and pressure. This is the case for a lot of compounds. The other definition of stable could be a compound's inability to react with other molecules (like the inability of carboxylic acids to be oxidized).What increases the stability of atoms?
In ionic bonds, atoms donate or receive electrons to achieve stability. In covalent bonds, atoms share electrons to achieve stability. The type(s) of bond a particular atom can form depends on the numbers of electrons in their outer shells.What is a stable atom?
An atom is stable because of a balanced nucleus that does not contain excess energy. If the forces between the protons and the neutrons in the nucleus are unbalanced, then the atom is unstable. Stable atoms retain their form indefinitely, while unstable atoms undergo radioactive decay.What is more thermodynamically favored?
Thermodynamics and Stability. The lower the potential energy of the system, the more stable it is. Chemical processes usually occur because they are thermodynamically favourable (i.e. DG = -ve) "Thermodynamically favourable" means from high energy to low energy, or, put another way, from less stable to more stable.What is the Gibbs free energy equation?
At constant temperature and pressure, the change in Gibbs free energy is defined as Δ G = Δ H − T Δ S Delta ext G = Delta ext H - ext{T}Delta ext S ΔG=ΔH−TΔSdelta, start text, G, end text, equals, delta, start text, H, end text, minus, start text, T, end text, delta, start text, S, end text.What does physically stable mean?
physical stability. The ability of a product to maintain its physical dimensions and properties when exposed to conditions normally encountered in its service environment.What does energetically stable mean?
An energetically stable msubstance does not react/decompose. The reason for this is there is no lower energy substance it can transform into. For example, water is energetically stable as to decompose into hydrogen and oxygen would require a lot of energy wwhich is not available.What do you mean by free energy?
In physics and physical chemistry, free energy refers to the amount of internal energy of a thermodynamic system that is available to perform work. Helmholtz free energy is energy that may be converted into work at constant temperature and volume.What does it mean to be thermodynamically favored?
Thermodynamically favorable means spontaneous, or that the reaction does not require energy in order to happen.Why is kinetic control irreversible?
Kinetic control: A reaction in which the product ratio is determined by the rate at which the products are formed. This E2 reaction is irreversible. The alkene products are not in equilibrium, so their relative stability does not control the amount of each product produced. This reaction is under kinetic control. 
