a, PT: \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)
b, Ta có: \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
Theo PT: \(n_{Al}=\dfrac{2}{3}n_{H_2}=0,1\left(mol\right)\)
\(\Rightarrow m_{Al}=0,1.27=2,7\left(g\right)\)
c, Theo PT: \(n_{H_2SO_4}=n_{H_2}=0,15\left(mol\right)\)
\(\Rightarrow m_{H_2SO_4}=0,15.98=14,7\left(g\right)\)
Bạn tham khảo nhé!
2Al+3H2SO4->Al2(SO4)3+3H2
0,1----0,15----------------------0,15 mol
nH2=\(\dfrac{3,36}{22,4}\)=0,15 mol
=>m Al=0,1.27=2,7g
=>m H2SO4=0,15.98=14,7g
a. \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
PTHH : 2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
0,1 0,15 0,05 0,15 ( mol )
b. \(m_{Al}=0,1.27=2,7\left(g\right)\)
c. \(m_{H_2SO_4}=0,15.98=14,7\left(g\right)\)