Report Submitted: September 22, 2013
Title: Properties of Gases
Purpose: To investigate some physical and chemical properties of gases.
Procedure: Explored physical and chemical properties of gases and used these properties to identify the gases and when they were present
B. Observation of placing Zinc into HCI was the appearance of gas bubbles rising to the surface
B. Reacts the same as hydrogen with gas bubbles rising to the surface.
F. I believe we fill the gas generator test tubes almost to the top with the chemical s to eliminate as much air as possible and to speed up the gas transfer to the pipet.
3. Hydrogen and Oxygen Mixture
G. A balanced equation for the reaction between Hydrogen and Oxygen is
2H2 + O2 -- 2H2O
Data Table: Experiment Results |
Gas | Flame reaction | Glowing splint | Limewaterreaction | BromothymolBlue reaction |
Hydrogen | Small Poof with flame, then blew flame out | | | |
Oxygen | | Glowing splint flamed back up when inserted | | |
Hydrogen & Oxygen | | | | |
Carbon Dioxide | Puts the flame out | | Turns the limewater a milky color | Turned the blue water to a yellow color |
Alka Seltzer | | | Increased the volume of the water/add CO2 | |
Breath | | | I saw no reaction | |
A. We fill the gas generator tubes almost to the top to eliminate as much air as possible and speed up the gas transfer to the pipet.
B. The zinc in the hydrogen generated experiment displaced with the HCI to form hydrogen gas.
C. The manganese dioxide remains unchanged. The oxygen escapes as a gas, leaving water.
D. A balanced equation for the reaction between Hydrogen and Oxygen is 2H2 + O2 -- 2H2O
E. The Bromothymol blue changes from green to yellow when CO2 is added. It acts as an indicator to show the presence of oxygen.