Merged two solutions of hydrochloric acid: 150 g of 30% and 150 g of 25%. What is the mass fraction of the acid?
| November 30, 2020 | education
find the mass of dissolved hydrochloric acid in the first and second solutions
Mr.w. 1 = (150 * 30) / 100 = 45g
Mr.w. 2 = (150 * 25) 100 = 37.5g
find the total mass of the solution
Mr-ra = 150 + 150 = 300g
find the total mass of dissolved sulfuric acid
MR.w. = 45 + 37.5 = 82.5g
hence the mass fraction of sulfuric acid is
W = (82.5 / 300) * 100% = 27.5%
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