Question

Ce volum de oxigen (c.n.)se va degaja la obtinerea aluminiului prin descompunerea electrolitica a 81,6kg de Al2O3?

Answer 1

2×102kg...............3×22.4 m3
2Al2O3 = 4Al + 3O2
81,6kg...................x

M Al2O3 = 2×27 + 3×16 = 54+48=102 g/mol
x= (81.6×3×22.4)/(2×102)= 26.88 m3 Oxigen