Question

Calculate the mass percent of a vinegar solution with a total mass of 97. 49 g that contains 2. 15 g of acetic acid

Answer 1

The mass percent of the vinegar solution with a total mass of 97.49 g that contains 2. 15 g of acetic acid is 2.20%.

Mass percent

Mass percent describes the mass of a substance contained in every 100 grams of the mixture. Likewise with the volume percent which states the volume of the substance contained in every 100 parts of the volume of the mixture. Meanwhile, parts per million (ppm) or parts per million (ppm) are units used to express the concentration of a substance in very small quantities. The concentration of a substance in ppm expresses the number of parts by mass of a substance in million parts per mass of the mixture.

To determine the mass percent of a substance, use the equation:

% mass = mass of substance  x (100)

                  mass of mixture  

We have,

Mass of substance = 2. 15 g

Mass of mixture = 97. 49 g

So, the mass percent of a vinegar solution is:$% mass = (mass of substance/mass of mixture) * (100%)$

   2.15 gr          x (100)

  97.49 gr

= 2.20%

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