PTHH: \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\uparrow\)
a_______\(\dfrac{3}{2}\)a_________________\(\dfrac{3}{2}\)a (mol)
\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\uparrow\)
b_______b_____________b (mol)
Ta lập HPT: \(\left\{{}\begin{matrix}27a+65b=11,9\\\dfrac{3}{2}a+b=\dfrac{8,96}{22,4}=0,4\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}a=0,2\\b=0,1\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}\%m_{Al}=\dfrac{0,2\cdot27}{11,9}\cdot100\%\approx45,38\%\\\%m_{Zn}=54,62\%\\n_{H_2SO_4}=0,4\left(mol\right)\Rightarrow V_{H_2SO_4}=\dfrac{0,4}{0,5}=0,8\left(l\right)\end{matrix}\right.\)
