\(n_{SO_2}=\frac{4,48}{22,4}=0,2\left(mol\right)\)
Có: \(SO_4^-+4H^++2e\rightarrow SO_2+2H_2O\)
___________0,8 <------------0,2_________(mol)
=> \(n_{H_2SO_4}=\frac{n_{H^+}}{2}=0,4\left(mol\right)\)
=> \(n_{H_2O}=n_{H_2SO_4}=0,4\left(mol\right)\)
Áp dụng ĐLBTKL
=> \(m_{muối}=10+0,4.98-0,2.64-0,4.18\)
= 29,2(g)