During the analysis of NH 3 in H 2 O gas streams, a big issue when trying to detect low NH 3 levels arises due to the spectral overlap between the m/z 17 of both NH 3 and water. The water background ...

Add 2 drops of phenolphthalein to each. Add a few drops of 3M NH3 to each beaker. The solution will turn pink. Add a scoop of solid NH4Cl to one of the beakers. The pink color will become very faint ...

Solutions ranging in concentration from 0.2 M to 2 M are suitable for this demonstration. Concentrations of HNO3, NH3, and NaOH should be higher (2-6 M) and all relatively close to each other in ...