Calculate the mass fraction of sodium chloride in the solution prepared by the growth of 2g. table salt in 198g. water.

Determine the weight of the solution. To do this, we sum up the masses of water and salt.

M solution = M water + M salt = 2 + 198 = 200 grams;

The mass fraction of the component of the solution will be equal to the ratio of its weight to the weight of the solution.

Let’s find the concentration of salt in the solution.

With salt = 2/200 = 0.01 = 1%;

Let’s find the concentration of water in the solution.

With water = 198/200 = 0.99 = 99%;

Let’s check:

To do this, add the concentrations of the components of the solution.

1 +99 = 100;