Soda Water Lab

Alaa Abdelrazig Pd: 1-2 ID #: 1 Investigation of the escape of CO2 from soda water Planning (A) 1. Research Question: Does the size of a container affect the speed of the release of CO2. 2. Hypothesis: The sizes of the containers vary in size so the escape of CO2 is likely to vary. The amount of CO2 released into the balloon during the timed trial until the balloon reaches a certain point is measured. The size of the container will indeed determine how fast the CO2 is released, with a control of 15cm as its limit. 3. The independent variable is the size of the container. The dependent variable is the speed of CO2 released. The many controls include: the distance between the container and the ruler, the volume of the soda water, the heat of the water, the amount if water heated and the size of the balloon. Planning (B) 1. Apparatus - 2 Burette Clamps - 1 Ruler - 1 100 ml Graduated Cylinder - 1 125 ml Graduated Cylinder - 1 25 ml Erlenmeyer Flask - 1 Water Bath - 1 Stop Watch - 3 Balloons (same size) - At least 75 ml of soda water - Tap water 2. Method a. Pre-heat the tap water in the water bath (fill the water bath ¾ of the way full) until it is steaming. b. Place a ruler on two clamps at exactly 15 cm above the given container (when container is placed in the water bath). c. Pour 25 ml of soda water into the 25 ml Erlenmeyer flask. d. Immediately cover the opening of the Erlenmeyer flask with a balloon. e. Place the 25 ml Erlenmeyer flask into the heated water and under the ruler. Let it sit until it reaches the ruler, and stop the stopwatch as soon as the balloon reaches the ruler. Record your data f. Repeat steps 3,4, and 5 for a 100 ml graduated cylinder g. Repeat steps 3, 4, and 5 for a 125 ml Erlenmeyer flask.

3. Diagram

4. Assumption Assume that the heated water will act as a catalyst for the escape of carbon dioxide. It helps the procedure occur at a faster rate. 5. Procedural Summary The objective of the experiment is to determine whether or not the container is a factor in the speed of CO2 released. The three containers used are the 25 ml Erlenmeyer flask, the 125 ml graduated cylinder and the 100ml-graduated cylinder. Placing the ruler above the individual containers at a certain height helps maintain a control for all the containers. The balloon rises with CO2 and is timed until it reaches the ruler. The time is measured for each trial and compared to the other trials. If the container’s speed of CO2 released is in the favorable pattern then the hypothesis is correct. However, if there is no correlation, then the hypothesis is false. Data Collection Container (name) 25 ml Erlenmeyer Flask 100 ml Graduated Cylinder 125 ml Graduated Cylinder

Time at which balloon reaches ruler