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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.
What must happen to the entropy of the universe during a spontaneous reaction or process?
The entropy of the universe must increase during a spontaneous reaction or process. This is in accordance with the Second Law of Thermodynamics, which states that the total entropy of an isolated system can never decrease over time.
A quantity that gives the direction of a thermodynamic process is?
specific heat
Is entropy of adiabatic compression increase or decrese?
entropy of system for a reversible adiabatic process is equal to zero. entropy of system for a irreversible adiabatic process (like free expansion) can be achieved by the following formula: Delta S= n Cp ln(V2/V1) + n Cv ln (P2/P1)
Does the entropy of ice at 0 degrees C differ from the entropy of ice at -50 degrees C?
50
How does entropy change in an adiabatic process?
In an adiabatic process, entropy remains constant.
Processes where the entropy remains the same are called?
reversible
When the entropy does not remains constant?
The entropy does not remains constant if the system is not isolated.
How does the principle of entropy conservation apply to the process of heat transfer in a closed system?
The principle of entropy conservation states that in a closed system, the total entropy remains constant or increases over time. In the process of heat transfer within a closed system, entropy is generated due to the random movement of molecules. This means that as heat is transferred, the entropy of the system increases, leading to a more disordered state.
What is isentropic materials?
Isentropic materials are materials that undergo a reversible, adiabatic process where there is no change in entropy. This means that the material experiences no energy transfer as heat, and its entropy remains constant during the process. Isentropic materials are often used in thermodynamic studies and calculations.
Which thermodynamic law has to do with entropy?
The second law of thermodynamics is closely related to entropy, stating that the total entropy of an isolated system can never decrease over time. This law provides a direction for natural processes, indicating that systems tend to move towards higher entropy states.
What is the relationship between entropy and adiabatic expansion?
During adiabatic expansion, entropy remains constant. This means that as a gas expands without gaining or losing heat, its entropy does not change.
Can entropy decrease during a process?
in general entropy will not decrease in a spontaneous process since spontaneous process are all irreversible ones. entropy can be reversed only through an reversible process by an ideal engine but it is impossible to create such an engine by violating second law of thermodynamics. hence entropy cannot be decreased practically
T-S diagram of in compressible fluid flow?
In the T-S diagram for incompressible fluid flow, the specific volume remains constant, resulting in vertical lines on the diagram. The process line in the T-S diagram would be a vertical line, parallel to the entropy axis. This is because the entropy remains constant for incompressible flow.
Does the entropy of the universe increase when a system undergoes a reversible process?
Yes, the entropy of the universe increases when a system undergoes a reversible process.
Is an increase in entropy of a system sufficient to make a process spontaneous?
Yes, an increase in entropy of a system is sufficient to make a process spontaneous.
When does an irreversible process occurs?
An irreversible process occurs whenever there is an increase in entropy. Entropy can be thought of as a measure of "wasted" energy, that is, energy that cannot be converted to useful work. Therefore any process which results in an increase in entropy wastes some portion of energy that cannot be recovered, and so the process is irreversible.
