Title: Properties of Gases
Purpose: To analyze a few physical and chemical properties of gases as well as using those properties to identify the gases.
Procedure:
* For Hydrogen I placed a piece of Zn metal into a test tube with diluted HCl. * To produce oxygen I added Hydrogen peroxide to manganese. * Next, I added baking soda to vinegar. This caused a quick and energetic reaction! The gas from the reaction I pumped into some Limewater. * Then I mixed Alka Seltzer and water and pumped the gas caused by that reaction into some limewater.
Data:
Data Table: Experiment Results | Gas | Flame Reaction | Glowing Splint | Limewater reaction | Bromothymol blue reaction | Hydrogen | It enlarged the flame. | | | | Oxygen | It lit up quickly | | | | Hydrogen & oxygen | It puts it out. | | | | Carbon dioxide | It puts it out | | It bubbled and turned cloudy. | It turned it yellow | Alka Seltzer | | | Bubbles stayed in the limewater. | | Breath | | | Nothing happened | |
Balanced Chemical Equation for Oxygen and Hydrogen: 2H2+O2 2H2O
Observations:
* The hydrogen reaction moved very slowly and I really couldn’t see anything happening. However, when I exposed it to flame, it lit up very well! * The oxygen reaction began immidiatly once I added the manganese. It started fizzing a lot and the liquid turned from a clear to a light brown. When I exposed it to flame it also lit up very well. * I then mixed the hydrogen with the oxygen and tried to light it. However this didn’t work at all. * Next, I added baking soda to vinegar. This caused a quick and energetic reaction! The gas from the reaction I pumped into some Limewater, which caused it to bubble and turn cloudy * Next, I let the gas from the sodium and hydrogen peroxide go into some Bromthymol Blue. It turned yellow. * When I mixed the Alka Seltz/water solution excess gas into the limewater it bubbled