m(H2SO4)р-ра =55,6*1,8=100,08г;
m(H2SO4)в р-ре =100,08*0,91=91г;
91 : x =91% :96,3%
x=96,3г;
n(H2SO4)=96,3 -91=5,3г; n(H2SO4)=5,3 : 98=0,054моль;
0,054 0,054
SO3+H2O=H2SO4
1 1
m(SO3)=0,054*80=4,33г
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