a) 2Al+3H2SO4---->Al2(SO4)3+3H2
b) n Al=10,8/27=0,4(mol0
Theo pthh
n Al2(SO4)3=1/2n Al=0,2(mol)
m Al2(SO4)3=0,2.342=68,4(g)
m ddAl2(SO4)3=\(\frac{68,4.100}{10}=684\left(g\right)\)
c) n H2=3/2 n Al=0,6(mol)
m H2=1,2(g)
m dd sau pư=m Al+m dd-m H2
=10,8+684-1,2=693,6(g)
C% Al2(SO4)3=\(\frac{68,4}{693,6}.100\%=9,86\%\)
Bài trên mk làm lộn..xin lỗi nhé
Chúc bạn học tốt
a)2Al+6HCl--->2AlCl3+3H2
b) Ta có
n Al=\(\frac{10,8}{27}=0,4\left(mol\right)\)
Theo pthh
n AlCl3=n Al=0,4(mol)
m AlCl3=0,4.133,5=53,4(g)
m dd AlCl3=\(\frac{53,4.100}{10}=543\left(g\right)\)
c) n H2=3/2 n Al=0,6(mol)
m H2=1,2(g)
m dd sau pư=m Al+m dd-m H2
=10,8+543-1,2=553,68(g)
C% AlCl3=\(\frac{53,4}{553,68}.100\%=9,64\%\)