a)SO2 +Ba(OH)2--->BaSO3 + H2O
Ta có
n\(_{SO2}=\frac{7,84}{22,4}=0,35\left(mol\right)\)
n\(_{Ba\left(OH\right)2}=0,3.1,4\)=0,42(mol)
=>Ba(OH)2 dư
Theo pthh
n\(_{BaSO3}=n_{SO2}=0,35\left(mol\right)\)
m\(_{BaSO3}=0,35.217=75,95\left(g\right)\)
Theo pthh
n\(_{Ba\left(OH\right)2}=n_{SO2}=0,35\left(mol\right)\)
n\(_{Ba\left(OH\right)2}duw=0,42-0,35=0,07\left(mol\right)\)
C\(_M=\frac{0,07}{0,3}=0,23\left(M\right)\)
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