The equation shows that ammonium chloride (a white solid) can break down to form ammonia and hydrogen chloride. It also shows that ammonia and hydrogen chloride (colourless gases) can react to ...

Values in cm-1. Where α = vibration – rotation interaction constant (α = alpha in the table) I = 16.8575/B gives the moment of inertia I, where B is in units of cm-1 and I has units of amu Angstroms 2 ...

This then reacts with hydrogen-containing species to produce the hydrogen chloride detected by the Trace Gas Orbiter. The chlorine or hydrochloric acid-rich dust eventually returns to the surface.