To 228 grams of a 20% sulfuric acid solution, 92 grams of 96% sulfuric acid were added. What is the mass fraction of sulfuric acid?

univerkov | November 30, 2020 | education

find the mass of dissolved sulfuric acid in the first and second solutions
MR.w. 1 = (228 * 20) /100=45.6g
Mr.c. 2 = (92 * 96) 100 = 88.32g
find the total mass of the solution
Mr-ra = 228 + 92 = 320g
find the total mass of dissolved sulfuric acid
MR.w. = 45.6 + 88.32 = 133.92g
hence the mass fraction of sulfuric acid is
W = (133.92 / 320) * 100% = 42%

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