a) $n_{Al} = \dfrac{10,8}{27} = 0,4(mol)$
$2Al + 3H_2SO_4 \to Al_2(SO_4)_3 + 3H_2$
$n_{H_2} = \dfrac{3}{2}n_{Al} = 0,6(mol)$
$V_{H_2} =0,6.22,4 = 13,44(lít)$
b) $n_{Al_2(SO_4)_3} = \dfrac{1}{2}n_{Al} = 0,2(mol)$
$m_{Al_2(SO_4)_3} = 0,2.342 =68,4(gam)$
\(n_{Al}=\dfrac{10,8}{27}=0,4\left(mol\right)\)
PTHH: \(2Al+6H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3SO_2+6H_2O\)
Mol: 0,4 0,2 0,6
a) \(V_{SO_2}=0,6.22,4=13,44\left(l\right)\)
b) \(m_{Al_2\left(SO_4\right)_3}=0,2.342=68,4\left(g\right)\)