nKoH /n SO2 = 0.3/ 0.6 = 0.5 < 1 => taora muoi KHSO3
KOH +SO2 --> KHSO3
0.3 -> 0.3 m KHSO3 = 0.3*120=36 g % KHSO3 = 36/ mdd sau Pu = 36/ ( 0.6*64+200) = 15.1%
mdd sau p.ư = mSO2(p.ư) + mdd(KOH) = 64.0,3 + 200 = 219,2 gam.
---> %KHSO3 = 36.100/219,2 = 16,42%