q1) 2 mol ideal gas, , = 7 , at an initial state of 100 kPa and 50 dm3 is heated to 200 kPa 2

by isochoric process. After that the ideal gas is compressed to 25 dm3 under isobaric process. Calculate the W, Q, and , in the whole process.

Q2). 20 C water is added to the boiler continuously, and then it is heated and converted to steam at 180 C by the isobaric process. Calculate the heat needed to produce 1000 kg water vapor. (Molar enthalpy of vaporization of 100 C water is 40.668 1. Average molar heat capacity at constant

pressure of water is 75.32 1 1. Molar heat capacity at constant pressure ,

of water vapor , = + + 2 = {29.16 + 14.49 103/ 2.022 106(/ )2} 1 1)

Thankyou:)