Vapour pressure hydrogen cyanide

A release during the production causes a person to be exposed to an airborne concentration of hydrogen cyanide vapour, respectively ammonia vapour of 1,000 mg/m in air during 8 min. The air temperature is 20 °C and the atmospheric pressure 100,000 Pa. What is the probability of death in case of... 

Hydrazoic acid, HN3, and its salts are very poisonous compounds with a toxicity comparable to hydrogen cyanide. Pure hydrazoic acid is a colorless strong-smelling liquid that tends to spontaneous explosion. Because of its high vapour pressure (b.p. 36 °C) lab-scale handling of HN3 is conducted either in water solution or by diluting the acid in organic solvents. 

Typically, butadiene is chlorinated in the vapour phase at 330—420 C and atmospheric pressure. The major products are the isomeric 1,4-dichlorobut-2-ene and 3,4-dichlorobut-l-ene. The mixture is then treated with sodium cyanide in the presence of cuprous chloride at 80—95°C to give predominantly 1,4-dicyano-but-2-ene. This is hydrogenated in the vapour phase over a palladium catalyst at 300°C to give adiponitrile. 

---