a, \(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)
\(Cu+2H_2SO_{4\left(đ\right)}\underrightarrow{t^o}CuSO_4+SO_2+2H_2O\)
b, Ta có: \(n_{H_2}=\dfrac{2,479}{24,79}=0,1\left(mol\right)\)
\(n_{Zn}=n_{H_2}=0,1\left(mol\right)\)
\(n_{SO_2}=\dfrac{2,9748}{24,79}=0,12\left(mol\right)\)
\(n_{Cu}=n_{SO_2}=0,12\left(mol\right)\)
\(\Rightarrow m=m_{Zn}+m_{Cu}=0,1.65+0,12.64=14,18\left(g\right)\)
Có: \(n_{H_2SO_{4\left(đ\right)}}=2n_{SO_2}=0,24\left(mol\right)\Rightarrow x=m_{ddH_2SO_4\left(đ\right)}=\dfrac{0,24.98}{98\%}=24\left(g\right)\)