grahams gas law :: essays research papers

GAS LAWSKINETIC ENERGY/ GRAHAMS LAW LABPurposeTo observe how masses of atoms and molecules make a motion their rate of diffusion, and explain our observations in terms of mass, velocity, kinetic energy and temperature.Warm-up Question1.     What is the definition of temperature?Temperature is a measure of the average Kinetic Energy of the particles composition a material.2.     What is the definition of diffusion?Diffusion is a spontaneous spreading of particles until they are uniformly distributed in their container.3.     If we increase the temperature of sample of vaunt, then what about the gas molecules will have to change?The gas molecules would begin to increase in speed since the temperature would increase.4.     The element iodine (I2) diffuses more slowly than ethanol (CH3CH2CH2OH). Why is this? unity is heavier in atomic mass then ethanol, slowing down its process to diffuse. Iodine weighs 2 53.6u while ethanol weighs 60.03u, giving ethanol a faster diffusions rate. map A1.     Obtain a glass tube and wash it with water. Dry the outside of the tube with a paper towel. Next, squirt some acetone into the tube. A small amount is all that is needed. Then dry the inside of the tube by passing air through the tube (use a fan, the window, blow through it, etc.)2.     Use chalk to label one end of your lab station, "HC1," and the other end, "NH3."3.     Lay the glass tube on the slacken and place the thermometer on the table next to the tube.4.     CATION THE NH3 AND THE HCI ARE IN VERY CONCENTRATED FORMS. DO NOT ALLOW EITHER CHEMICAL TO COME INTO CONTACT WITH YOUR SKIN. IF THE NH3 OR HCl SPILLS, GET A DAMP PAPER TOWEL AND CLEAN IT UP IMMEDIATELY5.     Obtain 1 small bottle of HCI and 1 small bottle of NH3. Place to each one bottle in their respective ends of t he lab table. Obtain forceps, label them, "HC1" or NH3"with tape, and place them at their respective end of the lab table.6.     Record the temperature of the air some the tube in the data table.7.     Separate the cotton ball into pieces small enough to stuff into the ends of the glass tube. Do not put them into the tube yet. 8.      eyepatch holding the cotton ball with the forceps, place 4 drops of HCl or NH3 (whichever corresponds to the label on the forceps).9.     Repeat step 8 with the other chemical. You should now have ii small cotton balls, one with 7 drops of HCI, one with 7 drops of NH3. Keep them at their respective ends of the lab station.