Gọi số mol Na2SO4 Na2SO3 NaHSO3 lần lượt là a, b ,c
\(\text{142a+126b+104c=10}\)
*Tác dụng HCl
nkhí=nSO2=0.045
\(=\text{>b+c=0.045}\)
*Tác dụng NaOH
\(\text{NaHSO3+NaOh-->Na2SO3+H2O}\)
\(\text{nNaOH=0.5*0.015*10/2.5=0.03}\)
=>c=0.03
Vậy:
a=0.0351
b=0.015
c=0.03
\(\left\{{}\begin{matrix}\text{%mNa2SO4=0.03513*142/10=49.89%}\\\text{%mNA2SO3=0.015*126/10=18.9%}\\\text{%mNaHSo3=31.21%}\end{matrix}\right.\)