| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 4C33.00 | Vapor Pressure | | |
| 4C33.10 | vapor pressure in barometer | PIRA 1000 | |
| 4C33.10 | vapor pressure in barometer | 4C33.10 | Insert water or alcohol in a mercury barometer. |
| 4C33.10 | vapor pressure of liquids | Hj-1 | Set up a series of mercury barometers and insert a small amount of volatile liquid in each one. |
| 4C33.10 | vapor pressure in barometer | H-81 | Place four mercury barometers in a line and introduce different liquids into three to show vapor pressure. |
| 4C33.11 | vapor pressure with a manometer | 27-3.7 | Three flasks containing water, alcohol, and ether are connected by stopcocks to the evacuated side of a mercury manometer. |
| 4C33.12 | vapor pressure of water | Hl-10 | A barometer is sealed off with liquid over the mercury. |
| 4C33.13 | comparison of vapor and gas | H-86 | Barometer tubes are moved up and down in a deep well of mercury. One contains air, the other alcohol vapor. The mercury level remains the same in the tube with alcohol vapor. |
| 4C33.13 | vapor pressure tube | H-82 | Separate tubes are made up with a liquid sealed over mercury and with an evacuated tube extending out of the mercury to show the vapor pressure. |
| 4C33.20 | addition of vapor pressures | PIRA 1000 | |
| 4C33.20 | addition of vapor pressures | 4C33.20 | Add water and then alcohol to a mercury barometer |
| 4C33.21 | addition of partial pressures | Hj-2 | Measure the pressure change with a manometer when a vial of ether is broken in a flask of air. |
| 4C33.25 | soda pop pressure | 27-3.1 | Attach a pressure gauge to a soda pop bottle and measure the buildup of pressure. |
| 4C33.30 | vapor pressure curve for water | PIRA 1000 | |
| 4C33.30 | vapor curve of water | AJP 29(10),xiii | Boil water in a flask attached to one side of a mercury manometer, remove the heat and seal off the flask from the atmosphere, take readings of the temp and pressure difference as the system cools. |
| 4C33.30 | vapor pressure curve for water | 27-3.8 | A flask of boiling water is stoppered with a thermometer and mercury manometer. Readings are taken as the water cools. |
| 4C33.31 | vapor pressure of water vs temp | 27-3.5 | Add a thermometer and pressure gauge to a pressure cooker the demonstrate the effect of temperature on partial pressure of water. |
| 4C33.32 | vapor pressure of water at boiling | H-74 | Insert a mercury filled J tube with water at the closed end into a boiling water bath and the mercury comes to the same level on both sides of the tube. |
| 4C33.33 | vacuum by freezing | TPT 2(4),178 | A table of vapor pressure values for water at standard bath temperatures down to -90 C. Some demo suggestions are included. |
| 4C33.35 | vapor pressure curve for CCl4 | AJP 43(10),925 | Modification of a flexible tube manometer to measure the vapor pressure curve of CCl4. |
| 4C33.50 | pulse glass | PIRA 500 | |
| 4C33.50 | pulse glass | H-72 | A tube with a small bulb on each end partially filled with a volatile liquid is held by one bulb in the palm forcing the liquid into the other bulb. |
| 4C33.50 | pulse glass | H-2a.2 | Just a picture. |
| 4C33.55 | vapor pressure fountain | H-85 | Ether is introduced into a stoppered flask half full of water with a nozzle extending to near the bottom of the flask. The vapor pressure forces the water out the nozzle. Diagram. |
| 4C33.56 | addition of vapor press. with ether | 27-3.9 | An apparatus is constructed of glass tubing to allow one to add ether to entrapped air at atmospheric pressure and measure the increased pressure. Reference: AJP 13(1),50. |
| 4C33.57 | flask inverted over ether | 27-3.4 | When a flask is inverted over ether, bubbles form due to the partial pressure of ether. |
| 4C33.58 | retarded evaporation | H-84 | Introduce a volatile liquid into two flasks connected to mercury manometers, one evacuated and the other full of air. The final pressure is the same but the time to get there differs. |
| 4C33.60 | beakers in a bell jar | 27-3.3 | Beakers of water and brine are placed in a bell jar and left for weeks. The brine gains water. |
| 4C33.61 | lowering of v.p. by dissolved salt | Hj-6 | A manometer separates water and a salt solution in a closed system. |
| 4C33.62 | vapor pressure of solutions | H-87 | Aqueous solutions of salt or sugar have a higher boiling point than water. |