a. PTHH: \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ 0,45mol:0,675mol\rightarrow0,225mol:0,675mol\)
b. \(n_{Al}=\frac{12,15}{27}=0,45\left(mol\right)\)
\(m_{Al_2\left(SO_4\right)_3}=0,225.342=76,95\left(g\right)\)
c. \(m_{H_2SO_4}=0,675.98=66,15\left(g\right)\)
nếu vậy thì phải là axit Sunfuric bạn nhé
nAl= 0.45 (mol)
2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
=> nAl2(SO4)3= 0.225 mol
mAl2(SO4)3= 76.95g
mH2SO4= 66.15g