1. 2NaOH+H₂SO₄=Na₂SO₄+2H₂O
n(NaOH)=2/40 = 0,05 моль n(H2SO4) = 0,05/2 = 0,025 моль
m(H2SO4) = 0,025* 98 = 2,45 г
2. 2Al+6HCL=2AlCl₃+3H₂↑
n(Al) = 1,08/27 =0,04 n(H2) = 0,04*3/2=0,06 моль
V(H2) = 22,4*0,06 = 1.344 дм3
3. AL₂O₃+6HCL=2AlCl₃+3H₂O
n(Al2O3) = 20/102 = 0,196 n(HCl) = 6*n(Al2O3) = 1,176 моль
V(HCl) = 1,176*22,4 = 26,3424 дм3