nSO2 = 3.36/22.4 = 0.15 (mol)
nNaOH = 0.5 * 0.1 = 0.05 (mol)
nNaOH / nSO2 = 0.05 / 0.15 = 0.3
Chỉ tạo ra muối axit
NaOH + SO2 => NaHSO3
0.05.........0.05.........0.05
mNaHSO3 = 0.05 * 104 = 5.2 (g)
nSO2= 3,36/22,4=0,15mol
nNaOH=0,5*0,1=0,05 mol
pthh 2NaOH + SO2 --> Na2SO3 + H2O
0,05 0,025 mol
ta thấy nNaOH/2<nSO2/1 =>NaOH hết , SO2 dư
=> m Na2SO3=0,025*126=3,15 g