Cp/Cv
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Re: Cp/Cv
constant pressure is assumed unless otherwise specified as we have the equation nRT ln(v2/v1) assumes constant pressure
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Re: Cp/Cv
You must assume that it is constant pressure because otherwise you a reversible system which requires another set of equations.
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Re: Cp/Cv
You can usually assume constant pressure because usually reactions arn't moved to different pressures throughout the course of the reaction. for example a chemist starting a reaction at sea level will probably let the reaction finish at sea level. This is true for most reactions with engines being an exception.
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Re: Cp/Cv
Fatemah Yacoub 1F wrote:You must assume that it is constant pressure because otherwise you a reversible system which requires another set of equations.
In this case, you'd use work = -nRT ln (v2/v1)
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