Compute the amount of hcn that gives the lethal dose

Reference no: EM13194118

Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 300. mg HCN per kilogram of air when inhaled. The density of air at26 ?C is 0.00118 g/cm3.

a) Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.

b) Consider the formation of HCN by the reaction of NaCN(sodium cyanide) with an acid such as H2SO4 (sulfuric acid):
2NaCN(s)+H2SO4(aq)?Na2SO4(aq)+2HCN(g)

What mass of NaCN gives the lethal dose in the room?

c) HCN forms when synthetic fibers containing Orlon® or Acrilan®burn. Acrilan® has an empirical formula of CH2CHCN, so HCN is 50.9% of the formula by mass. A rug in the laboratory measures 12.0× 15.0ft and contains 30.0 oz of Acrilan® fibers per square yard of carpet. If the rug burns, what mass of HCNwill be generated in the room? Assume that the yield of HCNfrom the fibers is 20.0% and that the carpet is 37.0% consumed.

Reference no: EM13194118

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