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1)

2Na+2H_2O->2NaOH+H_2

2NaOH+H_2SO_4->Na_2SO_4+2H_2O

NaOH+HCl->NaCl+H_2O

TH1:

Al(OH)_3+3HCl->AlCl_3+3H_2O

2Al(OH)_3+3H_2SO_4->Al_2(SO_4)_3+6H_2O

TH2:

Al(OH)_3+NaOH->NaAlO_2+2H_2O

2)

n_{H_2SO_4}=0,2(mol);n_{HCl}=0,4(mol);n_{Al(OH)_3}=0,1(mol)

TH1: 

Theo PT: n_{HCl}+2n_{H_2SO_4}=3n_{Al(OH)_3}+n_{NaOH}

->0,4+0,2.2=3.0,1+n_{NaOH}

->n_{NaOH}=0,5(mol)

->n_{Na}=n_{NaOH}=0,5(mol);n_{H_2}=1/2n_{Na}=0,25(mol)

m=0,5.23=11,5(g)

V=0,25.22,4=5,6(L)

TH2:

Theo PT: n_{NaOH}=n_{Al(OH)_3}+n_{HCl}+2n_{H_2SO_4}=0,9(mol)

->n_{Na}=n_{NaOH}=0,9(mol);n_{H_2}=1/2n_{Na}=0,45(mol)

m=0,9.23=20,7(g)

V=0,45.22,4=10,08(L)