A gas mixture contains 10.0 mole% H20(v) and 90.0 mole% N2 The gas temperature and absolute pressure at the start of each of the three parts of this problem are 50C and 500 mm Hg. Ideal gas Student behavior may be assumed in every part of this problem. Workbook (a) If some of the gas mixture is put in a cylinder and slowly cooled at constant pressure, at what temperature would the first drop of liquid form? (b) If a 30.0-liter flask is filled with some of the gas mixture and sealed and the water vapor in the flask is completely condensed, what volume (cm3) would be occupied by the liquid water? (c) If the gas mixture is stored in a rigid-walled cylinder and a low-pressure weather front moves in and the barometric (atmospheric) pressure drops, which of the following would change: (i) the gas density, (ii) the absolute pressure of the gas, (iii) the partial pressure of water in the gas, (iv) the gauge pressure of the gas, (v) the mole fraction of water in the gas, (vi) the dew-point temperature of the mixture?
1 CHEM 1030 Week 8 Notes Hydrates A. A compound that has a speciﬁc number of water molecules within its solid structure B. For example, in its normal state, copper(II) sulfate has ﬁve water molecules associated with it C. Copper(II) sulfate pentahydrate —> CuSO4 x 2H2O D. When the water molecules are driven off by heating, the resulting compound, Cu(SO)4 is sometimes called anhydrous copper(II) sulfate E. Anhydrous means the compound no longer has water molecules associated with it F. Cu(SO)4 is white but Cu(SO)4 x 5H2O is blue Molecular and Formula Mass A. The molecular mass is the mass in atomic mass units (