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What could make delta G become negative at a given enthalpy and entropy?
Wiki User
∙ 6y ago
The equation for ∆G is ∆G = ∆H - T∆S H is enthalpy and S is entropy
So, ∆G is negative if T∆S is greater than ∆H
Wiki User
∙ 6y ago
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What could make G become negative at a given enthalpy and entropy?
Changing the temperature
When oxidation number positive or negative?
It could be any thing. It is different to elements.
A neutral atom could become a positively charged particle through the loss of what?
A neutal atom could become a positively charged particle through the loss of an electron.
How do you calculate enthalpy given the temperature?
Specific Heat is:-the amount of energy required to raise the temperature of 1g of a substance 1°C-specific heat is symbolised as Cp or C-has units of J/g °C-J stands for Joules, which is a unit of energyMost often used in equation: q = mΔTCpq = energy in Jm = mass in gΔT = change in temperatureCp = specific heatExampleHow much energy is required to raise the temperature of 345.34g of Aluminium from 35.0°C to 250.00°C ? The specific heat of Aluminium is .90 J/Cp q = mΔTCpq = 345.34g(250.00°C - 35.0°C)0.09J/g°Cfrom there its just simple Algebra.q = 66,823.29JHowever, not all problems will be as simple as the one above. Some may require up to 3+ equations that can include Enthalpy or ΔH which leads to using a Change of State Graph.
A chemical change in which a substance becomes more negative?
The chemical change in which a substance becomes more negative could be the ionization of the substance. Means that the substance becomes more negatively charged and that is due to it being ionized. It tends to gain more electrons in order to fill its valence shell to become a stable substance.
What could make G become negative at a given enthalpy and entropy?
Changing the temperature
What could make Delta become negative at a given enthalpy and entropy?
The equation for ∆G is ∆G = ∆H - T∆S H is enthalpy and S is entropySo, ∆G is negative if T∆S is greater than ∆H
What could make G become negative at a given enthaply and entropy?
Changing the temperature. my only explanation is I got it right so I hope this helps.
Can you decrease the entropy if yes then how and if not then why?
You cannot reduce entropy because entropy increases (Second Law of Thermodynamics), if you could, we could have perpetual motion. When work is achieved energy is lost to heat. The only way to decrease the entropy of a system is to increase the entropy of another system.
What determine whether a reaction took place?
Use the following equation: delta G = delta H - T*deltaS. A reaction is spontaneous if delta G is negative. A reaction will always be spontaneous (under any temperature) only if the change in enthalpy (delta H) is negative and the change in entropy (delta S) is positive. If this is not the case, the reaction will only be spontaneous (negative delta G) for a range of temperatures (or could be always non-spontaneous)
What is the relationship between entropy and energy?
In thermodynamics, entropy is a measure of the non-convertible energy (ie. energy not available to do work) inside a closed system. The concept of free energy involves tapping into an inexhaustible source of energy available to do work. Thus, in a system generating free energy, entropy would never increase, and the usable energy could be siphoned off forever. This illustrates, succinctly, why a free energy system can never exist.
What else could exothermic and endothermic reactions be used?
They could be used for making science test or other things, per example: Many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions. Exothermic reactions may occur spontaneously and result in higher randomness or entropy (ΔS > 0) of the system. They are denoted by a negative heat flow (heat is lost to the surroundings) and decrease in enthalpy (ΔH < 0). In the lab, exothermic reactions produce heat or may even be explosive.
When you add a positive and a negative what does it become?
the answer could be negative or positive depending on whether the negative number you're adding is bigger than the positive number
What is the enthalpy of cadmium carbonate and cadmium oxide?
Standard enthalpy of formation (kJ/mol) I could not find cadmium carbonate Cadmium oxide: -258.4 From the CRC Handbook of Chemistry and Physics
When oxidation number positive or negative?
It could be any thing. It is different to elements.
What is stress response?
It could be negative if it goes on for along time. A person could also become depressed. But stress response could also be positive.
What is the stress response?
It could be negative if it goes on for along time. A person could also become depressed. But stress response could also be positive.
