Chemistry Lab 3 Properties of Gases

Dex Cimino 3/24/2013 CHE101, Tamburro Lab 3 Properties of Gases Data bow Experiment Results Gas Flamereaction Glowingsplint Limewaterreaction Bromothymol muddied reaction Hydrogen Popping extinguish dark-brown green Oxygen Brighter reignite redish blue Hydrogen & oxygen energy-releasing extinguish brownish Blue-green Carbon dioxide extinguish extinguish milklike yellow Alka Seltzer - - - - Breath None extinguish none blue I did not have any alka seltzer =/ Questions A.Give two reasons why we fill the gas generator test tubes almost to the top with chemics? The starting line reason is because we want to obtain pure gas and by minimizing the occur of air in the top this will maximize the gases purity. Also close to gases may react differently with air. Minimizing contact with air assures a break dance outcome. B. What happens to the zinc in the hydrogen generation examine? It dissolved and create hydrogen and zinc chloride. C. What happens to the manganese in the oxygen ge neration experiment? The manganese seemed like a catalyst because it sped up the rate of the chemical reaction.Read this Practice Test Chem 105D. Write a balanced comparability for the reaction between O2 and H2. 2H2 + O2 == 2H2O E. What is the function/purpose of the bromothymol blue in the carbon dioxide experiment? The Bromothymol blue changed color from clue to green and then it sullen yellow. After the carbonic acid gas was mixed with water, I think carbonic venomous was formed. This can measure the amount of CO2 present, a lot of CO2 will show yellow and very little or no CO2, the bromothymol will remain blue. F. Bromothymol blue is blue in the presence of canonical rootages, and yellow in the presence of acidic solutions.If your solution is a squashy green, what might you assume about the solution? I would assume that the solution is neutral if it is a murky green. With acidic solution, the blue turns yellow. Flow map 1. Fill four test tubes with ? distilled water. 2. Add 2-3 drops of bromthymol blue to each test. get off the ground 1 Oxygen 3. Add a lessened amount of manganese dioxide in an empty test tube. Then add a small amount of Hydrogen Peroxide. 4. Immediately secure the test tube. 5. Take the stopper out. 6. Repeat these steps for Part 2 Hydrogen and Part 3 Carbon. 7. Record data and answer questions.