Question

C2H4(g) + H2O(g) ⇌ C2H5OH

If 14g of ethene reacts with excess steam to produce 17.25g of ethanol, what is the percentage yield of the reaction

Answer 1

molecular wt if ethene = 28 g/mol
take 14 ÷ 28 = 0.5 mol
since there is a 1:1 ratio between ethene and ethanol one should produce 0.5 mol

MW ethanol = 46
0.5 × 46 = 23 g should be produced.

17.25/23 = 0.75 = 75% Percent yield