Determine the mass of the salt obtained by the interaction of 6.5 grams of zinc with chlorine, if the practical yield is 75%.

The reaction between zinc metal and chlorine is described by the following chemical equation:

Zn + Cl2 = ZnCl2;

In the reaction of 1 zinc molecule, 1 zinc chloride is formed.

Let’s calculate the chemical amount of a substance found in 6.5 grams of zinc.

M Zn = 65 grams / mol;

N Zn = 6.5 / 65 = 0.10 mol;

Taking into account the practical yield of 75%, the amount of salt will be 0.10 x 0.75 = 0.075 mol.

Let’s calculate the weight of this amount of salt.

M ZnCl2 = 65 + 35.5 x 2 = 136 grams / mol;

the weight of the salt will be:

m ZnCl2 = 136 x 0.075 = 10.2 grams;