2NaOH+Al2O3-->2NaAlO2+H2O
NaAlO2+2H2O-->Al(OH)3+NaOH
Al(OH)3+3HCL-->AlCL3+3H2O
2AlCL3+3Ca-->2Al+3CaCL2
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2NaOH+Al2O3-->2NaAlO2+H2O
NaAlO2+2H2O-->Al(OH)3+NaOH
Al(OH)3+3HCL-->AlCL3+3H2O
2AlCL3+3Ca-->2Al+3CaCL2