Question

Hexamethylenediamine (C6H16N2) is one of the starting materials for the production of nylon. It can be prepared from adipic acid (C6H10O4) by the following overall reaction:

C6H10O4(l) + 2 NH3(g) + 4 H2(g) → C6H16N2(l) + 4 H2O(l)

What mass of hexamethylenediamine can be produced from 826.3 g adipic acid?

Answer 1

C₆H₁₀O₄(l) + 2 NH₃(g) + 4 H₂(g) → C₆H₁₆N₂(l) + 4 H₂O(l)

In the above reaction

1 mol of adipic acid (C₆H₁₀O₄) produces 1 mole of Hexamethylenediamine (C₆H₁₆N₂).

Molar mass of adipic acid = 146.14 g/mol

That means,

146.14 g of adipic acid = 1 mol

826.3 g adipic acid = (823.3 / 146.14) mol = 5.63 mol.

So, 5.63 mol of adipic acid will produce 5.63 mol of hexamethylenediamine.

Now, molar mass of hexamethylenediamine = 116.21 g/mol

That is

1 mole of hexamethylenediamine = 116.21 g

5.63 mol of hexamethylenediamine = (5.63 x 116.21) g = 654.26 g