Question

For 1 kg of CO, calculate the hydrogen required and the resulting products for ethylene (C2H4), isopropanol (C3H8O), and pentane (C5H12) for Fischertropsch synthesis.

Answer 1

Fischer-tropsch synthesis reaction is

n CO + (2n+1) H2 -------------> C2H4 + C3H8O + C5H12

Hence,

1 CO + 3 H2   --------------> C2H4 + C3H8O + C5H12

1 mol    3 mol

28 g      3x2 g = 6g

1 kg         ?

       ? = (1 kg CO/ 28 g CO) x 6 g H2

        = 0.214 kg H2

mass of H2 required = 0.214 kg H2

Therefore,

0.214 kg of H2 is required for 1 kg of CO.