paridas

|| The plan was to capture ammonia gas by heating up ammonium chloride. The gas should be sealed into a container. A tube leads down to a beaker of water and phenolphthalein, and a syringe or pipette is inserted into the other opening. When the water from the pipette is squeezed out, the ammonia will dissolve, decreasing air pressure, and forcing the phenolphthalein and water up. Both beakers should then turn their contents purple.
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The ammonia fountain was basically a inverted beaker of ammonia, sealed and connected to a pipette full of water, and a a beaker full of water laced with phenolphtalein. The water would be squeezed out of the pipette, causing the ammonia to dissolve into the water instantly. The air pressure would drop at that point, and the outside air pressure would force the phenolphthalein and water up into the flask of ammonia, which would then turn purple. The only doubt I had left at the end of the experiment was, why does the beaker at the bottom also turn purple? Does the ammonia travel down the tube? Or does whatever ammonia that did not dissolve dissolve into that amount of water?

