Properties Of Gases Lab Report

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Ocean County College Department of Chemistry Properties of Gases Submitted by Krystle Tandy Date Submitted: 7/26/15 Date Performed: 7/24/15 Lab Section: Chem-180 Course Instructor: Professor Lea Stage Purpose The purpose of this experiment is to have the chance to learn about how gases react with certain conditions such as heat, a glowing splint, limewater, and bromothymol blue as well as creating gases by combining different substances and being able to identify the gases produced. Procedure Lab manual…show more content…
No noted reaction. No noted reaction. Changed to a greenish hue. Oxygen N/A Toothpick noted to ignite and burn. N/A N/A Hydrogen & Oxygen Rapid flame noted as well as a cracking sound. N/A N/A N/A Carbon Dioxide Flame extinguished. Flame extinguished. Noted to be whitish color and/or cloudy. No noted reaction. Alka Seltzer Flame slowly extinguished. Quickly extinguished flame. Cloudy appearance. Noted with a yellow hue to it’s bubbles. Breath No noted reaction. No noted reaction. Limewater turned to a whitish color and/or cloudy. No noted reaction. A. Give two reasons why we fill the gas generator test tubes almost to the top with chemicals. When there is less oxygen in the gas generator test tube it makes for a better and more of a gas result because it will cause more of a pressure build up and another reason that the gas generator test tubes are filled close to the top is for the reason that different gases may react differently under different conditions such as being exposed to…show more content…
C. What happens to the manganese in the oxygen generation experiment? When the manganese was added to the hydrogen peroxide I noted it started to slowly react by forming tiny bubbles, therefore my conclusion is this reaction was slower then the zinc in the diluted HCl reaction. D. Write a balanced equation for the reaction between O2 and H2. 2H2 (g) + O2 (g) → 2H2O (g) E. What is the function/purpose of the bromothymol blue in the CO2 experiment? The purpose of bromothymol blue is to measure the amount of CO2 that is present in a gas: If a solution changes to a yellow color this would indicate the presence of a lot of CO2, and if the solution changes to a green color this would indicate the presence of a little CO2. F. Bromothymol blue is blue in the presence of basic solutions, and yellow in the presence of acidic solutions. If your solution is a murky green, what might you assume about the solution? If bromothymol blue in the presence of a lot of CO2 is yellow and is green in the presence of a little CO2, I believe that a murky green color would either indicate a mixture of a basic and an acidic solution and/or possibly a neutral
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