Properties of Gases

•Be sure to write a detailed procedure for each lab design so that the same procedure can be followed accurately by anyone who reads it. Include details on the setup, the control of variables, and how the rate of each trial will be compared.

Please Note: This lab involves a lot of waiting for the gas collection. Make sure you allot yourself the full three hours to perform the experiments.

2. Read and record the temperature of the gas using the thermometer attached to the container.

items presently in solid form in the lab kit or purchased separately for this laboratory

Towards the end, we throw the agar gel to the trash can, clean the petri dish, tighten the bottles and clean the tables where we performed the experiment.

After all results have been recorded, pour all of the solutions down the drain, rinse equipment and clean up the

Place the test tube containing cold water in a test tube clamp and hold the test tube above the burning alcohol. Observe the outside of the test tube for evidence of product formation.

Purpose: The purpose of this experiment is to investigate the physical and chemical properties of pure chemical substances by subjecting them to various environmental extremes.

10.Clean up: Rinse reaction vessel, empty collection box, dry table as needed, cleanup up any baking soda spills..

1 ml of water should be added to the first test tube and make a note. In the second test tube, 1 ml of methyl alcohol should be added. In the third test tube, 1 ml of hexane must be added. Lastly, the fourth test tube will be a control.

8. In order confidently determine what substance my “G9R” was I would have to do over the boiling point experiment a couple of more times. I would turn the gas off and take the Bunsen burner away from the apparatus when the stream of bubbles started coming out from the mouth of the capillary tube. This would allow me to correctly determine when the atmospheric pressure was equal to the vapour pressure.

Flatulence is often seen as an embarrassing occurrence that leads to shame and all around is frowned upon in public. Despite its harsh reputation, flatulence is normal, and everyone experiences it throughout his or her daily lives. Flatulence is directly related to the world of chemistry, both involving chemical reactions and gas laws. In the end, while flatulence might be the cause of smelly situations, it also shows that chemistry is not limited to the laboratory, it is seen throughout the world, even in the human body.

Collect to 2 large beakers both large beakers are to be filled with hot water (labtutor). Then obtain seven conical tubes these will be used to collect the levels of gas, you will also need test tube a stopper and a plastic tube (labtutor). You want to fill the conical tube to at least 50 ml of water (Cressy). Take the four conical tubes filled with water and place two in each beaker, to do this you must invert the tube and cover the release hole as to not lose any water (Cressy). Then place the beakers with the tubes in the bath so they can be at the same temperature as the bath (Cressy). Next mark all of your test tubes in number order to be sure which tube contains what concentrations and pH (Cressy). Having mixed a solution to the specifications of 2.5 ml of glucose in all tubes, 3 ml of yeast in 2 tubes of pH 5, 2 tubes of pH 9, and the single pH 7 tube, the remaining two tubes will contain no yeast as they will be negative controls. Next add 2 ml of pH buffer 3 tubes will receive pH of 5, three will receive a pH of 9 and a single tube of pH 7. Finally add pure water to make sure all test tubes have 10 ml of solution. When making the solutions

The size of the flame depends on the gas-air mixture. If a high proportion of primary air enters the flame would be much smaller and concentrated giving higher flame temperatures. This gives rise to carbon dioxide because of unburned gases. For this the injector was again the great solution. As the gas comes out of the injector air enters into the stream and is mixed in the mixing tube with the gas before it comes out of the burner port. Combustion zone is where the gas burns in the primary air and generates heat in the flame and combustion is completed with the aid of the secondary air that is drawn into the air from the sides.

There has been a rapid growth in the field of biosensing through both ultrasensitive chemical and gas sensors. The bio-sensing protocols that are able to detect specific biological and chemical species, sensitively and specifically (selectively) can noticeably influence our daily lives. The issues related to monitoring of industrial emissions, medical diagnosis and public security are significant application fields of gas sensing in particular.