1. A sample of 11.2 g of N2 (nitrogen) gas initially in a volume V1 = 150 mL and T = 500K is expanded isothermally and reversibly to a final pressure p2 = 1.00 atm. Calculate w, q, ?U and ?H. Assume N2 to behave like an ideal gas.
2. The same 11.2 g of N2 (T = 300K) is expanded now isothermally and irreversibly from V1 = 150 mL to p2 = 1 atm, against a constant external pressure pext. = 1 atm. Again calculate w, q, ?U and ?H for this irreversible isothermal ideal gas expansion.
3. When 350 J of energy is added as heat to 3.0 mol of a gas kept at constant pressure, the temperature of the gas rises by 2.87 K. Calculate the molar heat capacity, Cm of the gas a) at constant pressure (Cp,m) and b) at constant volume (CV,m) (assume ideal gas).
4. CaCO3 in the form of limestone is the starting mineral for the production of cement. In cement kilns, limestone is heated to approximately 1300 K, at which temperature it decomposes to CaO,
1. A sample of 11.2 g of N2 (nitrogen) gas initially in a volume V1 = 150 mL and T = 500K is expanded isothermally and reversibly to a final pressure p2 = 1.00 atm. Calculate w, q, ?U and ?H. Assume N2 to behave like an ideal gas.
2. The same 11.2 g of N2 (T = 300K) is expanded now isothermally and irreversibly from V1 = 150 mL to p2 = 1 atm, against a constant external pressure pext. = 1 atm. Again calculate w, q, ?U and ?H for this irreversible isothermal ideal gas expansion.
3. When 350 J of energy is added as heat to 3.0 mol of a gas kept at constant pressure, the temperature of the gas rises by 2.87 K. Calculate the molar heat capacity, Cm of the gas a) at constant pressure (Cp,m) and b) at constant volume (CV,m) (assume ideal gas).
4. CaCO3 in the form of limestone is the starting mineral for the production of cement. In cement kilns, limestone is heated to approximately 1300 K, at which temperature it decomposes to CaO,
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