qrev
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Re: qrev
Madeline Ogden 3B wrote:qrev is the amount of heat generated in a reversible process.
So does deltaS = q/T only apply to reversible expansions and compressions?
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Re: qrev
Hannah_Butler_2E wrote:Madeline Ogden 3B wrote:qrev is the amount of heat generated in a reversible process.
So does deltaS = q/T only apply to reversible expansions and compressions?
I believe you use this equation when you are at a constant temperature for a reversible process.
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Re: qrev
Hi! q is the energy transferred as heat and when its written as qrev it just means that the energy must be transferred reversibly. I hope this helps :)
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Re: qrev
qrev stands for heat in reversible processes (which we use for isothermal reversible expansion of ideal gas), as opposed to q in general which can refer to both irreversible and reversible processes
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Re: qrev
Hannah_Butler_2E wrote:Madeline Ogden 3B wrote:qrev is the amount of heat generated in a reversible process.
So does deltaS = q/T only apply to reversible expansions and compressions?
I believe that if the problem reads deltaS = q/T, it can be used for both reversible and irreversible reactions, but if it reads deltaS = qrev/T then q is only supposed to be used with a reversible reaction.
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Re: qrev
qrev is for a reversible process (heat transferred reversibly). q is the transfer of energy
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Re: qrev
Kaitlyn Hernandez 3I wrote:Hannah_Butler_2E wrote:Madeline Ogden 3B wrote:qrev is the amount of heat generated in a reversible process.
So does deltaS = q/T only apply to reversible expansions and compressions?
I believe you use this equation when you are at a constant temperature for a reversible process.
So then to clarify, when it's an irreversible process and the temperature changes, we're supposed to use the deltaS formula that has ln(T2/T1), right?
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Re: qrev
Yeah, I think you can only use that equation when the process can be interpreted as reversible and at constant temperature.
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Re: qrev
Just wanted to add that by using qREV, Dr. Lavelle mentioned that it just means that in the context of the problem, there is no heat lost (so the heat lost/gained can be assumed to be exactly equal and opposite).
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Re: qrev
qrev is the amount of heat that can be produced (or lost) in a reversible process. So it is saying in this equation it is not asking for the heat produced or lost by an irreversible reaction.
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