Before CO2 is released
After CO2 is released
Smell, touch, sight, sound
The Alka-Seltzer tablets are white, big, and round in shape. The flask is full of warm water. The balloon is yellow. The items are separate and no reaction is taking place.
The Alka-Seltzer is crushed into a fine white powder. The Alka-Seltzer releases many small bubbles as it touches the water. The balloon is expanding rapidly. A fizzing sound can be heard.
There are still a few scattered bubbles and all of the Alka-Seltzer has gone into the water. The balloon is standing erect and slightly firm to the touch. There is water inside the balloon.
The bubbling has stopped. When the balloon was cut a small whoosh of gas could be heard escaping. The balloon returned to normal size. On the inside of the balloon there are trace remains of Alka-Seltzer powder.
Mass of flask with water, balloon, Alka-Seltzer
Mass of items together, including tape
Mass of items after reaction, before release of CO2
Mass of items after CO2 is released
Circumference and Pressure Measurements:
NA room NA
Circumference of balloon
25.20 cm (±0.1cm)
Results and Analysis:
The above calculations show how much CO2 gas was produced in the reaction and its pressure. The results show the number of moles of CO2 produced and the experimental and theoretical values of the molar mass of the carbon dioxide. The results show that CO2 gas was produced from an Alka-Seltzer reaction.
Conclusion: The final results of the experiment, after collection of the CO2 gas, determined the volume of CO2 released, the moles of CO2 released, and the molar mass of the CO2 gas produced. The gas was collected in a balloon, and the total volume was 270.3 cm3. The ideal gas law was used to calculate the moles produced through calculations of the pressure, volume, temperature, and gas…