Which poisonous compound can be a gas, solid or liquid, the most infamous application of which was use by the Nazi regime in Germany for mass murder in some gas chambers during the Holocaust?
Gas chamber Gas chamber A gas chamber is an apparatus for killing humans or other animals with gas, consisting of a sealed chamber into which a poisonous or asphyxiant gas is introduced. The most commonly used poisonous agent is hydrogen cyanide; carbon dioxide and carbon monoxide have also been used. Gas chambers were used as a method of execution for condemned prisoners in the United States beginning in the 1920s and continue to be a legal execution method in three states. During the Holocaust, large-scale gas chambers designed for mass killing were used by Nazi Germany as part of their genocide program.
Gas–liquid contactor Gas–liquid contactor A gas–liquid contactor is a particular chemical equipment used to realize the mass and heat transfer between a gas phase and a liquid phase. Gas–liquid contactors can be used in separation processes (e.g. distillation, absorption) or as gas–liquid reactors or to achieve both purposes within the same device (e.g. reactive distillation). They are divided into two main categories: Examples of differential gas–liquid contactors are: Examples of stagewise gas–liquid contactors are: Some important factors to take into account to choice the typology of gas–liquid contactor more suitable for a particular application are: In particular heat and mass transfer velocity