Calculate the heat capacity of a gas sample from the following information: The sam- ple comes to equilibrium in a flask at 25°C and 121.3 kPa. A stopcock is opened briefly, allowing the pressure to drop to 101.3 kPa. With the stopcock closed, the flask warms, returning to 25°C, and the pressure is measured as 104.0 kPa. Determine Cp in J mol- K-l assuming the gas to be ideal and the expansion of the gas remaining in the flask to be reversible and adiabatic.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.3P
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Calculate the heat capacity of a gas sample from the following information: The sam-
ple comes to equilibrium in a flask at 25°C and 121.3 kPa. A stopcock is opened
briefly, allowing the pressure to drop to 101.3 kPa. With the stopcock closed, the flask
warms, returning to 25°C, and the pressure is measured as 104.0 kPa. Determine Cp
in J mol- K- assuming the gas to be ideal and the expansion of the gas remaining
in the flask to be reversible and adiabatic.
Transcribed Image Text:Calculate the heat capacity of a gas sample from the following information: The sam- ple comes to equilibrium in a flask at 25°C and 121.3 kPa. A stopcock is opened briefly, allowing the pressure to drop to 101.3 kPa. With the stopcock closed, the flask warms, returning to 25°C, and the pressure is measured as 104.0 kPa. Determine Cp in J mol- K- assuming the gas to be ideal and the expansion of the gas remaining in the flask to be reversible and adiabatic.
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