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 ...

When writing chemical equations for reversible reactions, the usual one-way arrow is not used. Instead, two arrows are used, each with just half an arrowhead (⇌). The top one points right, and ...

Born 1954, in Munich. Study of chemistry Munich Univ., doctorate Munich Univ. (1982), postdoctoral stays in Cambridge and Basel, postdoc at the Fritz Haber Institute of the Max Planck Society and ...

(1983), Professor in Physical Chemistry Bochum Univ. (1987), Director and Scientific Member at the Fritz Haber Institute of the Max Planck Society (1996-2019), emeritus since 2019, Honorary Professor ...