PTHH: \(2Al+3CuSO_4\rightarrow Al_2\left(SO_4\right)_3+3Cu\)
Ta có: \(n_{CuSO_4}=\dfrac{100\cdot48\%}{160}=0,3\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}n_{Al}=0,2\left(mol\right)\\n_{Cu}=0,3\left(mol\right)\end{matrix}\right.\) \(\Rightarrow m_{bản.nhôm.ban.đầu}=63,8+m_{Al\left(p.ứ\right)}-m_{Cu}=50\left(g\right)\)