H2SO4 + BaCl2 = BaSO4 + 2HCl
n(BaSO4) = 5,7/233 = 0.02 моль
n(H2SO4) = 0.02 моль
m(H2SO4) = 0.02*98 = 1.96 г
W(H2SO4)= 1.96/16*100% = 12.25%
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Verified answer
H2SO4 + BaCl2 = BaSO4 + 2HCl
n(BaSO4) = 5,7/233 = 0.02 моль
n(H2SO4) = 0.02 моль
m(H2SO4) = 0.02*98 = 1.96 г
W(H2SO4)= 1.96/16*100% = 12.25%