I need help with answering the last 2 pages of this lab page 99 and 100. can please figure out the amounts thay go in the blank spots and the ansers to questions 1 &2 on page 100
97 VAPOR PRESSURE AND THE ENTHALPY OF VAPORIZATION INTRODUCTION When a volatile liquid is placed into a container it starts to atmosphere all of the liquid ill evaporate. However, if the container is thenlos constant. As more will evaporate. At a given temperature the rate at which the molecular liquid evaporates s evaporate. If the container is left open to the evaporate. However, if the container is then closed only a portion of the liquid he rate at phase. Eventually, there are enoug of the molecules are in the vapor phase some o which this occurs is low due to the low number of molecules in the vapor phase. EVe e molecules are in the vapor phase some of them start to re-enter the liquid phase. Initially, t apor phase such that the rate at which the molecules re-enter the liquid phase and the rate e are equal to each other. The partial pressure of the volatile substance in the container the v at which they is the vapor pressure of that substance at that temperature It we increase the temperature the vapor pressure will increase and vic evaporat e versa. The relationship between the vapor pressure and the temperature is In RT vpH is the enthalpy of where P is the vapor pressure, P., is the unit pressure in the same units as p, Πvaporization, R is the ideal g depends the natural logarithm of the vapor p axis we should get a straight line with a slope equal to A on the substance. If we measure the vapor pressure of a substance at various temperatures and plot ressure on the y-axis and the inverse of the absolute temperature on the x From the slope of the plot we can then determine the enthalpy of vaporization PROCEDURE 1. Put about 250 mL of water into a 400-mL. beaker (from your locker) and place it on a hot plate. Set the hot plate to about 5 2. Go to one of the experimental setups in the lab. Each set up is comprised of a Vernier LabQuest d evice, a Temperature Probe and a Gas Pressure Sensor with syringe and accessories Connect the Temperature Probe to CHi on the top of the LabQuest and connect the Gas Pressure sensor to CH2 V3. Turn on the LabQuest by pressing the power button at the top left corner of the front of the LabQuest. The display should now show the temperature in °C in the box on the top and the pressure in kPa in the box on the bottom 4. 5. Place the white stopper from the Gas Pressure Sensor into a 125-mL rlenmeyer flask (from your locker). Connect the white tube on the stopper to the Gas Pressure Sensor with the clear tubing provided. Leave the valve on the blue side open for now 6. Place enough water into a 600-mL beaker (from your locker) such that the water covers the Erlenmeyer flask up to the stopper. Clamp the flask in place as in Figure 1. Place the Temperature Probe into the water. Allow the flask and the Temperature Probe to remain in the water until the Figure 1
