To 450 g of a 2% sulfuric acid solution was added 350 g of water. Calculate the mass fraction
| May 2, 2021 | education
To 450 g of a 2% sulfuric acid solution was added 350 g of water. Calculate the mass fraction of sulfuric acid in the resulting solution.
Find the mass of sulfuric acid in the original 2% solution.
m (H2SO4) = 450 * 2/100 = 9 g.
Let’s calculate the mass of the resulting solution after mixing.
m (solution) = 450 + 350 = 800 g.
The mass fraction of a substance in solution is the ratio of the mass of the desired component to the total mass of the solvent and this component, multiplied by 100%.
w (H2SO4) = 9/800 * 100% = 1.12%.
Thus, the solution was diluted approximately 1.8 times.
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