The equation shows that ammonium chloride (a white solid) can break down to form ammonia and hydrogen chloride ... and so is an endothermic process. The reverse process (the addition of water ...

Ammonia, NH 3, is an alkaline gas and so turns damp red litmus paper blue. Ammonium ions (NH 4 +) – found in ammonium compounds such as ammonium chloride, ammonium nitrate and ammonium sulfate ...

developed the Haber-Bosch process for synthesising ammonia. We have relied on that technology for more than 100 years. Without it, the world's population might be just half of what it is today ...