Question

What is the mass percent of sulfur in sulfuric acid?

Answer 1

Answer:

this is the correct answer

Explanation:

Take the atomic mass of sulfur and divide by the molecular mass of sulfur acid, multiply by 100 to get the percentage. Sulphuric acid is usually about 98% pure, the rest being water, so mutiply your answer by .98 to get the mass of S in conc. sulphuric acid as a weight/weight percentage.

Answer 2

mass % of S in H2SO4 is:

since, weight of S is 32a.m.u.  and weight of H2SO4 is 98a.m.u.

so, it will be (32/ 98)*100 i.e. 32.65