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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.
How can one determine if a process is reversible or irreversible?
A process is reversible if it can be reversed without any loss of energy or increase in entropy. One way to determine if a process is reversible is to see if it can be undone by making small changes to the system. If the process cannot be undone without some loss of energy or increase in entropy, then it is irreversible.
When is the change in entropy zero?
The change in entropy is zero when a process is reversible, meaning that the system and surroundings return to their original state without any net change in entropy.
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.
What is the equation that relates the change in entropy (q) to the temperature (T), volume (V), and ideal gas constant (R) in a reversible isothermal process?
The equation that relates the change in entropy (S) to the temperature (T), volume (V), and ideal gas constant (R) in a reversible isothermal process is S q / T.
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.
How can one determine if a process is reversible or irreversible?
A process is reversible if it can be reversed without any loss of energy or increase in entropy. One way to determine if a process is reversible is to see if it can be undone by making small changes to the system. If the process cannot be undone without some loss of energy or increase in entropy, then it is irreversible.
Process where entropy remains the same?
A process where entropy remains the same is an isentropic process. In an isentropic process, there is no net change in the entropy of the system. This typically occurs when there is no heat transfer and the system is adiabatic and reversible.
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)
If a reversible process requires 3.6 kJ to take place at 24 Celsius what is the entropy change due to this process?
Entropy for a reversible process is q/T 3600 J ÷ (273 + 24) = 12.12 J/K
What is a reversible process?
A reversible process is one in which entropy doesn't increase. In other words, it should be possible to go through the process, and then to reverse the process (go through the process in reverse order), without using any energy.Note that this is an idealization; in general, REAL processes may approach a reversible process, but usually they won't be 100% reversible - some energy is wasted when going "back and forth".
What is an isoentropic process?
An isoentropic process is a chemical or thermodynamic process in which entropy does not change. An example a reversible adiabatic process is isoentropic.
When is the change in entropy zero?
The change in entropy is zero when a process is reversible, meaning that the system and surroundings return to their original state without any net change in entropy.
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 the change in entropy equal zero?
The change in entropy equals zero when a process is reversible, meaning that the system and surroundings return to their original state without any net change in entropy.
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
What is the difference between reversible and cyclic process?
A reversible process is one that can be undone with no change in entropy of the system and surroundings. A cyclic process is one that starts and ends at the same state, with the system going through a series of state changes. All reversible processes are cyclic, but not all cyclic processes are reversible.
