PTHH: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
Ta có: \(\left\{{}\begin{matrix}n_{Al}=\dfrac{1,35}{27}=0,05\left(mol\right)\\n_{HCl}=\dfrac{3,65}{36,5}=0,1\left(mol\right)\end{matrix}\right.\)
Xét tỉ lệ: \(\dfrac{0,05}{2}>\dfrac{0,1}{6}\) \(\Rightarrow\) Nhôm dư, tính theo HCl
\(\Rightarrow n_{AlCl_3}=\dfrac{1}{30}\left(mol\right)\) \(\Rightarrow m_{AlCl_3}=\dfrac{1}{30}\cdot133,5=4,45\left(g\right)\)
\(\Rightarrow\) Chọn A
Ta có: \(n_{Al}=\dfrac{1,35}{27}=0,05\left(mol\right)\)
\(n_{HCl}=\dfrac{3,65}{36,5}=0,1\left(mol\right)\)
\(PTHH:2Al+6HCl--->2AlCl_3+3H_2\)
Ta thấy: \(\dfrac{0,05}{2}>\dfrac{0,1}{6}\)
Vậy Al dư.
Theo PT: \(n_{AlCl_3}=\dfrac{1}{3}.n_{HCl}=\dfrac{1}{3}.0,1=\dfrac{1}{30}\left(mol\right)\)
\(\Rightarrow m_{AlCl_3}=\dfrac{1}{30}.133,5=4,45\left(g\right)\)
Chọn A
