Investigation 6
...olorless with HCl, Hydrochloric acid, also clear and colorless. Two drops of both solutions were very carefully added together and quickly formed a cloudy white precipitate at the bottom of the solution. At the same moment, the chemists noticed that there was bubbling of the aqueous solution releasing gas. Experiment 3. The third experiment consisted of clear and colorless solutions of BaCl2 and Na2(CO3). The chemists carefully added one drop of each solution into a test tube. The mixed aqueous solutions rapidly formed a white creamy precipitate at the top of the solution. Experiment 4. The chemists took three drops of clear and colorless NaOH and slowly added it to a test tube containing a single drop of Al(NO3)3. Very quickly a cloudy precipitate formed assumed to be Al(OH). Question #2): According to the JACS article, the observations were located in the next section after the Introduction, Results and Discu...