PRELIMINARY EXERCISES 



11 



through the other end. Where does this gas go? Why? 

 Would this method of collecting gases be successful if they 

 were readily soluble in water? 



B. Fill a second bottle with water and invert in the same 

 way as the first. Bring the one containing the gas under 

 the one containing the water, and gradually turn it mouth 

 upward (see Fig. 3). In this way gases may be transferred 

 from one vessel to another for study. 



FIG. 3. 



