nH2SO4 = 14,7: 27=0,54(mol)
PTHH : 2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
theo pt , nH2 = nH2SO4=0,54(mol)
=> VH2(đktc) = 0,54. 22,4=12,096 (l)
b theo pt nAl = 3/2. nH2=0,36 (mol)
=> mAl = 0,36.27 =9,72(g)
c)theo pt n Al2(SO4)3 = 1/2nAl = 0,18(mol)
=>mAl2(SO4)3= 0,18.342=61,56(g)