Testing for nitrogen

Equipment 2 beakers (100 ml), 2 watch glasses, spatula, dropper pipettes, Bunsen burner to cover the beaker. Chemicals Ammonia water (C), ammonium chloride (Xi), sodium hydroxide (C), red litmus paper, or universal indicator paper. How-to Put on protective goggles. Do not smell the gases directly! 1 Analysis of liquid ammonia solution A few ml of… Continue reading Testing for nitrogen

Ammonia fountain

Equipment 2-L round bottomed flask, 2-L beaker, 2-hole stopper, Glass tube (2 ft. in length), Ring stand and clamps, medicine dropper, Chemicals Dry NH3 gas or apparatus to produce NH3, Water, Phenolphthalein How-to Fill the 2-L flask with ammonia gas and seal it with a rubber stopper. Ammonia can be generated by gently heating a… Continue reading Ammonia fountain

Ammonium chloride mist

Equipment Beaker (100 ml) or test tube. Chemicals Conc. Ammonia water (C), conc. Hydrochloric acid (C). How-to Put on protective goggles. Keep both substances away from the body. For better contrast, it is recommended to use a dark (black) background. When ready, open both bottles and hold them close to each other. We can also… Continue reading Ammonium chloride mist

Magnesium nitride

It is said again and again that nitrogen reacts chemically “like a dead dog”. No wonders, why it is used as a protective gas in the food and chemical industry. Most often, it is used to prevent the entry of highly reactive oxygen. If you still want to persuade it to react, you have to… Continue reading Magnesium nitride

What is ammonia

Ammonia is the hydride of nitrogen, i.e. nitrogen hydride. It has the formula NH3. Its structure is not trigonal planar, but tetrahedral. Strictly speaking, it is a tetrahedral cutout. Compared to the ideal tetrahedron (like in methane), a free electron pair forms the fourth tetrahedron tip. At room temperature, ammonia is a colorless, highly corrosive… Continue reading What is ammonia