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Procedure
First fill a collection bottle with cold tap water and pour it into the container in which you will later invert the collecting bottle. Set up your station to look like figure 4.6 on page 79 of your test.
Two Alka -Seltzer tablets placed in the test tube will generate enough gas to fill the collection bottle.
After adding the tablets, quickly put the rubber stopper in place and carefully insert the delivery tube into the top of the collection bottle.
The carbon dioxide will force the air out of the test tube and the rubber tube so it will not be collected.
When the collecting bottle is completely filled with gas invert it in the container having the same volume of water. Be sure not to lose any gas in the process.
Move the inverted bottle back and forth in the larger container in order to cause a little water to enter its mouth.
Be careful to keep the mouth of the bottle against the bottom of the container so that no bubbles of carbon dioxide escape.
As more gas dissolves and water rises into the collecting bottle, shake it back and forth more and more vigorously. The shaking mixes the water inside and outside the collecting bottle, ensuring that the gas is dissolved in all the water
To measure the volume of gas that is dissolved, the bottle must be turned upright without losing any saturated solution from inside the bottle. Quickly invert the entire assembly shown in figure 4.8 on page 81 over a sink. Only the solution in the container that is outside the bottle will spill into the sink
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