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When could a high temperature make a reaction that was non spontaneous at a low temperature spontaneous?
AlecRX
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How will the temperature affect the spontaneity of a reaction with positive h and s?
A high temperature will make it spontaneous.
On what conditions does a spontaneous reaction become spontaneous?
For some non-spontaneous reactions, you can change the temperature. For other non-spontaneous reactions, there is nothing you can do to make it spontaneous. Nature favors reactions that increase a system's entropy (disorder) and nature favors reactions that are exothermic (they release enthalpy). Any reaction that does both of these things is spontaneous at all temperatures. Any reaction that does neither of these things is never spontaneous. As far as this question is concerned, the interesting reactions are endothermic reactions that increase entropy and exothermic reactions that decrease entropy. Whether these reactions are spontaneous depends on the temperature. The first variety (endothermic, increase entropy) will be spontaneous at high temperatures; the second (exothermic, decrease entropy) will be spontaneous at low temperatures. To find the temperature at which a reaction becomes spontaneous, one may apply the Gibbs equation: DG = DH - TDS where capital Ds stand for the Greek capital delta.
What reaction would have an increased entropy?
At high temperature the entropy increase.
Buring paper is anabolic or catabolic endergonic or exergonic spontaneous or non-spontaneous?
Catabolic: long cellulose polymers are broken down into carbon dioxide, water, and carbon monoxide gases. Exergonic: can be used to do work Spontaneous: once started the reaction will reach completion by itself, driven by a very positive change in entropy. However the reaction has a high activation energy. Therefore it is thermodynamically favourable but kinetically unfavourable.
Select all the conditions below that are most likely to result in a spontaneous chemical reaction or process?
-ΔH +ΔS T high -ΔH -ΔS T low
When Could A High Temperature Make A Reaction That Was Nonspontaneous At Low Temperature Spontaneous?
When H and S are both positive
How will temperature affect the spontaneity of reaction with positive H and S?
A high temperature will make it spontaneous.
How will the temperature affect the spontaneity of a reaction with positive h and s?
A high temperature will make it spontaneous.
According to the Gibbs free energy equation G H - T S when could a high temperature make a reaction that was nonspontaneous at low temperature spontaneous?
when h and s are both positive
A chemical reaction has a positive H value and a positive S value Under what conditions is the reaction spontaneous?
the reaction is always spontaneous :) youre welcome =D i just took this on apex, the correct answer is the reaction is spontaneous only at high temperatures.
A chemical reaction has a positive ΔH value and a positive ΔS value Under what conditions is the reaction spontaneous?
The reaction is spontaneous only at high temperatures.
On what conditions does a spontaneous reaction become spontaneous?
For some non-spontaneous reactions, you can change the temperature. For other non-spontaneous reactions, there is nothing you can do to make it spontaneous. Nature favors reactions that increase a system's entropy (disorder) and nature favors reactions that are exothermic (they release enthalpy). Any reaction that does both of these things is spontaneous at all temperatures. Any reaction that does neither of these things is never spontaneous. As far as this question is concerned, the interesting reactions are endothermic reactions that increase entropy and exothermic reactions that decrease entropy. Whether these reactions are spontaneous depends on the temperature. The first variety (endothermic, increase entropy) will be spontaneous at high temperatures; the second (exothermic, decrease entropy) will be spontaneous at low temperatures. To find the temperature at which a reaction becomes spontaneous, one may apply the Gibbs equation: DG = DH - TDS where capital Ds stand for the Greek capital delta.
What part is in charge of automatic processes?
In science, Gibbs free energy can tell if a chemical reaction is spontaneous. It is given by the formula: G = H - TS H = enthalpy of reaction S = entropy of reaction T = temperature in Kelvin If G is negative the reaction is spontaneous. However if activation energy is high, reaction rate is slow and the reaction may take a while to progress, regardless of its spontaneity.
How is temperature affect the spontaneity of a reaction with positive H and S?
∆G = ∆H - T∆S and ∆G has to be negative for the reaction to be spontaneous. So, ultimately the effect of temperature will depend on the value of ∆H. If ∆H is negative, and ∆S is positive, then temperature won't matter, and reaction will be spontaneous. If ∆H is positive, and ∆S is positive, then a high temperature will favor spontaneity. If ∆H is negative and ∆S is negative, then a low temperature will favor spontaneity. So, the answer to your question is the higher the temperature the more likely the reaction will occur spontaneously.
What kind of reaction is KCl plus Na equals NaCl plus K?
This reaction is called a "single displacement" reaction, as the sodium replaces the potassium in combination with the chlorine. *This is the high-temperature distillation reaction to produce metallic potassium, and is not a spontaneous reaction because potassium is more reactive than sodium. The corresponding single replacement reaction is K + NaCl => Na + KCl.
At what temperature does astatine react with hydrogen?
Probably the reaction is possible only at a high temperature.
Why does thermal energy effect a chemical reaction?
Generally the reaction rate is higher at high temperature.
