What mass of sulfur is contained in a $250*g$ mass of $98%$ $"sulfuric acid"$ ?

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Answer 1 · 2017-03-07T09:10:59

Approx. $82*g$ ............

$"Moles of sulfuric acid"$ $=$ $"Mass"/"Molar mass"$

$=(250*g)/(98.08*g*mol^-1)=2.55*mol$ .

And thus there are $2.55*molxx32.06*g*mol^-1$ of sulfur, approx. $82*g$ sulfur.

Sulfuric acid can be obtained at 98% concentrations, but this is still an aqueous solution, with $[H_2SO_4]~=18*mol*L^-1$ .

What mass of sulfur is contained in a 250*g250*g mass of 98%98% "sulfuric acid""sulfuric acid"?