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Conversion of H2O liquid to H2O gas requires energy but why evaporation is a spontaneous reaction?
When H2O(l) evaporates to H2O(g), hydrogen bonds are broken and energy is absorbed. This means it is endothermic. To go from liquid to gas, entropy needs to increase because gas has more disorder, which means a change in entropy (ΔS) should be positive. ΔG = ΔH - TΔS, so when ΔG is negative the reaction is spontaneous. For ΔG to be negative TΔS should be greater than ΔH. This can be shown mathematically (e.g. T is equal to 373.15 and the values of ΔS and ΔH can be calculated) and thus the evaporation of H2O is spontaneous.
What else can I help you with?
Which of the following reactions shows that the formation of NO2 requires 33.1 kJ mol?
1/2 N2(g) + O2(g) + 33.1 kJ NO2(g)
Why did the reaction not proceed at all at 100 degree celsium?
The reaction may not have proceeded at 100 degrees Celsius because the temperature was too high, causing the reactants to decompose or the reaction to reach an equilibrium where the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in no net change in the concentrations of the reactants and products. It's also possible that the reaction requires a lower temperature for activation energy to be met.
Chemical reaction - Methane combusting with fluorine?
The chemical reaction of methane (CH4) combusting with fluorine (F2) results in the production of hydrogen fluoride gas (HF) and carbon tetrafluoride gas (CF4). This reaction is highly exothermic and requires energy input to initiate the combustion. It proceeds rapidly and releases a large amount of heat.
What happens to the the energy from the sun when it changes liquid water into water vapor?
The energy from the sun causes liquid water to evaporate and change into water vapor. This process requires heat energy to break the bonds between water molecules, allowing them to escape into the air as vapor.
What will be the reaction of Hydrogen peroxide with esters?
Peroxide is a good nucleophile, it might be strong enough for an addition-elimination reaction to form a peroxy acid and the alcohol. Depending on the stability of the peroxy acid, it might decompose to the carboxylic acid.
Is the reaction spontaneous or non-spontaneous when considering the keyword "spontaneous vs non-spontaneous"?
In the context of "spontaneous vs non-spontaneous," a reaction is considered spontaneous if it occurs on its own without needing external influence. On the other hand, a non-spontaneous reaction requires external energy input to occur.
Which best describes a galvanic cell a battery containing a non spontaneous reaction a battery containing an acid and a base a battery containing a spontaneous redox reaction a battery that requires?
spontaneous redox reaction
Is the combustion of gasoline spontaneous?
No, the combustion of gasoline is not spontaneous. It requires a spark or heat source to initiate the reaction.
What is the significance of delta G in chemical reactions?
The significance of delta G in chemical reactions is that it indicates whether a reaction is spontaneous or non-spontaneous. A negative delta G value means the reaction is spontaneous and can proceed on its own, while a positive delta G value means the reaction is non-spontaneous and requires external energy input to occur.
Is the burning of paper a spontaneous reaction?
No, the burning of paper is not a spontaneous reaction as it requires an external heat source to initiate the combustion process. Once the paper is exposed to sufficient heat, it undergoes a chemical reaction with oxygen in the air to produce heat and light energy, resulting in the flame and smoke that we observe during combustion.
Forming a triacylglyceride from three fatty acids and glycerol...identify this reaction as either anabolic or catabolic endergonic or exergonic and spontaneous or non spontaneous.?
Forming a triacylglyceride from three fatty acids and glycerol is an anabolic reaction that is endergonic (requires energy input) and non-spontaneous under normal cellular conditions.
What is the difference between a reaction that happens spontaneously and a reaction that doesn't?
The difference can be clarified by entropy (the second rule of thermodynamics).The reaction is more spontaneous with higher entropy, for the reactions that occur spontaneously the entropy is higher than for the ones that do not.
When is rxn non spontaneous?
A reaction is considered non-spontaneous when the Gibbs free energy change (ΔG) is positive, indicating that the reaction requires an input of energy to occur. This could happen when the reactants have high energy relative to the products or when the reaction conditions do not favor the formation of products.
Are electrolysis reactions thermodynamically spontaneous?
Electrolysis reactions are not thermodynamically spontaneous and require an external source of energy to drive the reaction. This is because they involve the non-spontaneous process of breaking molecules into their constituent ions, which requires an input of energy.
What is the definition of delta G naught and how does it relate to the spontaneity of a chemical reaction?
Delta G naught, also known as standard Gibbs free energy change, is a measure of the energy change that occurs in a chemical reaction under standard conditions. It indicates whether a reaction is spontaneous or non-spontaneous. If delta G naught is negative, the reaction is spontaneous and can proceed without external energy input. If delta G naught is positive, the reaction is non-spontaneous and requires external energy input to occur.
Is an endergonic reaction spontaneous or not?
No, an Endergonic Reaction is not spontaneous because it requires a minimal amount of energy to get the reaction to actually start. That amount of energy required to start the reaction is called the Activation Energy.
When you take the reverse reaction of a spontaneous process this is called nonspontaneous process true or false?
True. When you take the reverse reaction of a spontaneous process, it typically requires an input of energy and is considered a nonspontaneous process. Spontaneous processes occur naturally without external energy, while nonspontaneous processes do not occur without energy being supplied.
