Question #4

21 4. Acetylene gas, CH, can be prepared by the reaction of calcium carbide with water: Cac + 2 H09 Ca(OH),+CH Calculate the volume of CH, that is collected over water at 23 C by reaction of 0.1580 g of CaC, if the total pressure of the gas is 726 torr? (The vapor pressure of water is listed on the data sheet). 1. Mass of butane cylinder initial 2. Mass of butane cylinder final 3. Mass of butane released 4. Volume of butane collected 5. Atmospheric pressure 6. Partial Pressure of HO 7. Pressure of butane gas 8. Temperature of butane 9. Molecular weight of butane calculated from experiment 182.99 182.219 0.48gd 205 mL 758, 4 mm Hg 20.45 mm Hg 737.95 mm Hg 22.5C 88.5 g/mol Calculations Vapor Pressure of Water at Various Temperatures Temperature (C) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Pressure (mmHg) 9.2 9.8 10.5 11.2 12.0 12.8 13.6 14.5 15.5 16.5 17.5 18.7 19.8 21.1 22.4 23.8