From acetylene obtained from 1.5 mol of calcium carbide, 25 ml of benzene (density 0.88 g / cm3)

From acetylene obtained from 1.5 mol of calcium carbide, 25 ml of benzene (density 0.88 g / cm3) was synthesized. Calculate the mass fraction of the benzene yield.

When benzene is synthesized, 1 benzene molecule is synthesized from three acetylene molecules.

Therefore, from this amount of acetylene, 3 times less benzene can be synthesized.

Let’s calculate its weight:

M C6H6 = 12 x 6 + 6 = 78 grams / mol;

m C6H6 = 1.5 / 3 x 78 = 39 grams;

The reaction yield will be:

K = 25 x 0.88 / 39 = 0.5641 = 56.41%;