n Al=\(\dfrac{32,4}{27}\)=1,2 mol
n O2=\(\dfrac{23,7984}{22,4}\)=1,062mol
4Al+3O2-to>2Al2O3
1,2---------------0,6 mol
O2 dư
=>m Al2O3=0,6.102=61,2g
2Al+6HCl->2AlCl3+3H2
1,2-----------------------1,8 mol
=>VH2=1,8.22,4=40,32l
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