# Problem: Consider the formation of HCN by the reaction of NaCN (sodium cyanide) with an acid such as H2SO4 (sulfuric acid):2 NaCN(s) + H2SO4(aq) → Na2SO4(aq) + 2 HCN(g)What mass of NaCN gives the lethal dose in the room?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 at 26°C is 0.00118 g/cm3.

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###### Problem Details

Consider the formation of HCN by the reaction of NaCN (sodium cyanide) with an acid such as H2SO4 (sulfuric acid):

2 NaCN(s) + H2SO4(aq) → Na2SO4(aq) + 2 HCN(g)

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

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 at 26°C is 0.00118 g/cm3.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.