What mass of alkali should be taken to prepare 50 grams of a 16% solution?

Let’s calculate the weight of the alkali.

M alkali = 50 x 0.16 = 8 grams;

Similarly, we find the weight of the solvent (water).

(In the calculations, we take the density of water equal to 1 gram / ml).

M water = 50 x 0.84 = 42 grams = 42 ml;

Let’s check. To do this, add the masses of the components of the solution and get the mass of the solution in question.

8 + 42 = 50;