How to Test for Ammonia Using Sodium Hydroxide - A Step-by-Step Guide

The video is a tutorial on how to test for the presence of ammonia by converting ammonium ions into ammonia using sodium hydroxide, and then detecting the ammonia gas by using damp red litmus paper as an indicator. The video explains that while ammonium ions are difficult to identify, ammonia is easy to detect using this method. The step-by-step instructions for the test are provided, including warming the mixture to produce ammonium gas and detecting its presence using the litmus paper. The video emphasizes the importance of avoiding direct contact with ammonia gas for safety reasons.