Hydrogen cyanide, HCN, can be made by a twostep process. First, ammonia is reacted with O2 to give n

Question

Hydrogen cyanide, HCN, can be made by a twostep process. First, ammonia is reacted with O₂ to give nitric oxide, NO. 4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

Then nitric oxide is reacted with methane, CH₄.

2NO(g) + 2CH₄(g) → 2HCN(g) + 2H₂O(g) + H₂(g).

When 25.5 g of ammonia and 32.0 g of methane are used, how many grams of hydrogen cyanide can be produced?

Accepted Answer

4NH3 + 5O2 → 4NO + 6H2O$\frac{25.5}{17}$= 1.5 mole 1.5 mole2NO + 2CH4 → 2HCN + 2H2O1.5 mole 2 mole 1.5 moleL.R. = 1.5 × 27 = 40.5 g

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