Unformatted text preview: HOMEWORK II5 3.18b Calculate the change in Gibbs energy of 25 g of methanol (mass density 0.791 g cm −3 ) when the pressure is increased isothermally from 100 kPa to 100 MPa. 3.19b Calculate the change in chemical potential of a perfect gas when its pressure is increased isothermally from 92.0 kPa to 252.0 kPa at 50°C. 3.2 The heat capacity of chloroform (trichloromethane, CHCl 3 ) in the range 240 K to 330 K is given by C p ,m /(J K −1 mol −1 ) = 91.47 + 7.5 × 10 −2 ( T /K). In a particular experiment,1.00 mol CHCl 3 is heated from 273 K to 300 K. Calculate the change in molar entropy of the sample. 3.4 Consider a perfect gas contained in a cylinder and separated by a frictionless adiabatic piston into two sections A and B. All changes in B is isothermal; that is, a thermostat surrounds B to keep its temperature constant. There is A and B....
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This note was uploaded on 05/01/2011 for the course CHEM 346 taught by Professor Cardelino during the Spring '11 term at Spelman.
 Spring '11
 Cardelino
 Physical chemistry, pH

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