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What happens to the entropy in the reaction?
Entropy increases. In a reaction comprised of sub-reactions, some sub-reactions may show a decrease in entropy but the entire reaction will show an increase of entropy. As an example, the formation of sugar molecules by living organisms is a process that shows decrease in entropy at the expense of the loss of entropy by the sun.
When water becomes ice the entropy decreases does this contradict the second law?
No, because the entropy of the surroundings must increase more than the decrease in the water->ice transition, thus the net change in the entropy of the universe is positive, consistent with the second law.
What would cause entrophy to decrease in a reaction?
Entropy can decrease in a reaction when a system transitions from a more disordered state to a more ordered state, often observed in processes like crystallization or the formation of complex molecules from simpler ones. This decrease typically occurs in a local context, as the overall entropy of the universe still tends to increase according to the second law of thermodynamics. Additionally, external energy input can drive reactions that lead to a decrease in entropy within a system. However, it’s important to remember that while entropy may decrease locally, the total entropy of the combined system and surroundings will increase.
What would decrease in entropy apex?
A decrease in entropy typically occurs in processes that involve the organization of matter or energy, such as the formation of ice from water or the crystallization of a substance from a solution. In these cases, particles become more ordered, resulting in a lower entropy state. Additionally, when energy is added to a system in a controlled manner, such as cooling a gas, it can lead to reduced disorder and lower entropy. However, according to the second law of thermodynamics, the total entropy of an isolated system can never decrease; it can only decrease locally at the expense of increasing the overall entropy elsewhere.
What processes result in a decrease in entropy and internal energy?
Processes that result in a decrease in entropy and internal energy typically involve the transfer of energy out of a system, such as in exothermic reactions or phase transitions like freezing. In these cases, the system loses heat to its surroundings, leading to a more ordered state and lower entropy. Additionally, work done on the system, such as compression, can also decrease internal energy and entropy if it results in a more organized arrangement of particles. Overall, these processes favor stability and order at the expense of energy availability.
Is there anyway to decrease the entropy?
Only by increasing the entropy of another system.
When disorder in a system increases does entropy increase or decrease?
When disorder in a system increases, entropy increases. Entropy is a measure of the randomness or disorder in a system, so as disorder increases, the entropy of the system also increases.
When a student cleans their dorm room the entropy of the system must decrease How is this NOT a violation of the second law of thermodynamics?
If you include the student in the system, the entropy will increase, not decrease.
Is entropy always conserved in a closed system?
No, entropy is not always conserved in a closed system. Entropy can increase or decrease in a closed system depending on the processes happening within it.
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.
In an isolated system, can entropy only increase?
In an isolated system, entropy can only increase or remain constant, but it cannot decrease.
What happens to the entropy in the reaction?
Entropy increases. In a reaction comprised of sub-reactions, some sub-reactions may show a decrease in entropy but the entire reaction will show an increase of entropy. As an example, the formation of sugar molecules by living organisms is a process that shows decrease in entropy at the expense of the loss of entropy by the sun.
When water becomes ice the entropy decreases does this contradict the second law?
No, because the entropy of the surroundings must increase more than the decrease in the water->ice transition, thus the net change in the entropy of the universe is positive, consistent with the second law.
Is it true that the entropy of a system decreases over time?
false
Under what condition can entropy decrease in a system?
First of all, entropy is the defined as the extent to which something is disordered. In chemistry, for entropy in a SYSTEM to decrease, the products of a reaction must be less disordered than the reactants. The extent of "disordered-ness" can be seen by the physical states of the substances. A gas is more disordered than a liquid, which is more disordered than a solid. So, an example of a reaction that leads to a decrease in entropy is: HCl(gas) +NH3(gas) -----> NH4Cl(solid) So you see, there are more gaseous molecules in the reactant side of the equation than in the product side, which means the products are less disordered than the reactants. ----------------------------------------------- However, one must note that if the entropy of a system(reaction) decreases, the entropy of the surroundings should increase. This is because change in TOTAL entropy(A) = change in entropy of SYSTEM(B) + change in entropy of SURROUNDINGS(C). It is a rule that A must increase in every case ( have a positive value). If the B is negative(a decrease in entropy), C must be positive(an increase in entropy) to keep the value of A positive.
What would cause entrophy to decrease in a reaction?
Entropy can decrease in a reaction when a system transitions from a more disordered state to a more ordered state, often observed in processes like crystallization or the formation of complex molecules from simpler ones. This decrease typically occurs in a local context, as the overall entropy of the universe still tends to increase according to the second law of thermodynamics. Additionally, external energy input can drive reactions that lead to a decrease in entropy within a system. However, it’s important to remember that while entropy may decrease locally, the total entropy of the combined system and surroundings will increase.
Why does the entropy of an isolated system never decrease?
The entropy of an isolated system never decreases because the second law of thermodynamics states that in a closed system, entropy tends to increase over time. This means that the disorder or randomness of the system will always tend to increase, leading to a higher overall entropy.
