The purpose of the experiment is to determine the amount of CO2 present in a contained space. Using alka-seltzer tablets to control the amount of CO2, which will be an independent factor.
Internal Assessment- CO2 Factor Lab
Purpose:
The purpose of the experiment is to determine the amount of CO2 present in a contained space. Using alka-seltzer tablets to control the amount of CO2, which will be an independent factor. The container a 100ml beaker will be the location this occurs, which will be covered with a piece of foil. The amount of water will change accordingly and therefore see which beaker contains the most CO2. I believe that the beaker with the least amount of water will contain the most CO2 because there is more space for CO2 to form.
Materials:
-Alka-seltzer tablets (10)
-Beaker
-Pipette
-Foil
-Distilled water
-Stopwatch
-Bromythol Blue
Procedure:
- First fill a beaker with 5ml, using the pipette, of distilled water and then add two alka-seltzer tablets. Quickly cover the lid to the beaker with the foil. Wait fifteen seconds, using the stopwatch, and then measure the amount of CO2 in the beaker.
- Repeat this process with only different amounts of distilled water. There will be five trials. One with 5ml, 10ml, 15ml, 20ml, and finally 25ml of water.
- Then this entire process will be repeated five times to ensure precision and more accurate values and information.
- To test the amount of CO2 in the beaker, add 40 drops of the bromythol blue liquid. The substance should turn yellow if Co2 is present. The more yellow and darker it gets the more Co2 was expelled.
- Before this process should occur, the bromythol blue should be added to a beaker with only distilled water and no Co2, this will be the control to compare the trials to.
