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

1 Answer
Mar 7, 2017

Answer:

Approx. #82*g#............

Explanation:

#"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#.